Journal ArticleJ Natl Compr Canc Netw · August 2024
The determination of an optimal treatment plan for an individual patient with rectal cancer is a complex process. In addition to decisions relating to the intent of rectal cancer surgery (ie, curative or palliative), consideration must also be given to the ...
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Journal ArticleJ Natl Compr Canc Netw · June 2024
Colorectal cancer (CRC) is the fourth most frequently diagnosed cancer and the second leading cause of cancer death in the United States. Management of disseminated metastatic CRC involves various active drugs, either in combination or as single agents. Th ...
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Journal ArticleCurr Treat Options Oncol · April 2024
Over the past decades, the treatment of locally advanced rectal cancer has evolved dramatically due to improvements in diagnostic imaging, surgical technique, and the addition of radiotherapy and/or chemotherapy. Fractionation of neoadjuvant radiotherapy w ...
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Journal ArticleAnn Thorac Surg · January 2024
Outcomes for patients with esophageal cancer have improved over the last decade with the implementation of multimodality therapy. There are currently no comprehensive guidelines addressing multidisciplinary management of esophageal cancer that have incorpo ...
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Journal ArticlePract Radiat Oncol · 2024
Outcomes for patients with esophageal cancer have improved over the last decade with the implementation of multimodality therapy. There are currently no comprehensive guidelines addressing multidisciplinary management of esophageal cancer that have incorpo ...
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Chapter · January 1, 2024
The liver is the most common site for blood-borne metastasis from colorectal cancers, and is the dominant metastatic disease site just prior to death (Stewart et al. 2018). Until the early 1980s, it was generally accepted that hepatic metastases from color ...
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Journal ArticleJ Natl Compr Canc Netw · June 2023
This discussion summarizes the NCCN Clinical Practice Guidelines for managing squamous cell anal carcinoma, which represents the most common histologic form of the disease. A multidisciplinary approach including physicians from gastroenterology, medical on ...
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Journal ArticleJournal of the National Comprehensive Cancer Network : JNCCN · April 2023
Cancers originating in the esophagus or esophagogastric junction constitute a major global health problem. Esophageal cancers are histologically classified as squamous cell carcinoma (SCC) or adenocarcinoma, which differ in their etiology, pathology, tumor ...
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Journal ArticleJournal of the National Comprehensive Cancer Network : JNCCN · October 2022
This selection from the NCCN Guidelines for Rectal Cancer focuses on management of malignant polyps and resectable nonmetastatic rectal cancer because important updates have been made to these guidelines. These recent updates include redrawing the algorith ...
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Journal ArticleJ Natl Compr Canc Netw · February 2022
Gastric cancer is the third leading cause of cancer-related deaths worldwide. Over 95% of gastric cancers are adenocarcinomas, which are typically classified based on anatomic location and histologic type. Gastric cancer generally carries a poor prognosis ...
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ConferencePhys Med Biol · December 6, 2021
Objective:To design a deep transfer learning framework for modeling fluence map predictions for stereotactic body radiation therapy (SBRT) of adrenal cancer and similar sites that usually have a small number of cases.Approach:We developed a transfer learni ...
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ConferenceInternational journal of radiation oncology, biology, physics · November 2021
Purpose/objective(s)Management of HCC without surgical resection or transplantation is poorly defined with no standard. Stereotactic body radiation therapy (SBRT) or hypofractionated image-guided radiotherapy (HIGRT), is an evolving, non-invasive, ...
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ConferenceInternational journal of radiation oncology, biology, physics · November 2021
Purpose/objective(s)To date there is no clear standard non-surgical therapeutic option for HCC patients. Ablative radiation therapy (SBRT/HIGRT) is an emerging non-invasive treatment for patients with HCC. However, there is concern about the risk ...
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Journal ArticleInt J Radiat Oncol Biol Phys · June 1, 2021
There is a need to foster future generations of radiation oncology physician scientists, but the number of radiation oncologists with sufficient education, training, and funding to make transformative discoveries is relatively small. A large number of MD/P ...
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Chapter · May 25, 2021
The leadership position of a departmental chair can be a positive and rewarding opportunity. These rewards principally stem from the success of the faculty, trainees, staff, and everyone supporting the department. With healthcare reform and the constraints ...
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ConferenceJNCCN Journal of the National Comprehensive Cancer Network · May 1, 2021
Few treatment advances have been observed in recent years for the treatment of advanced colorectal cancer (CRC). The goal remains to find approaches beyond FOLFOX and bevacizumab that will prolong remission. Immunotherapy for patients with microsatellite i ...
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Journal ArticleInt J Radiat Oncol Biol Phys · March 15, 2021
PURPOSE: Pancreas stereotactic body radiation therapy (SBRT) treatment planning requires planners to make sequential, time-consuming interactions with the treatment planning system to reach the optimal dose distribution. We sought to develop a reinforcemen ...
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Journal ArticleJ Natl Compr Canc Netw · March 2, 2021
This selection from the NCCN Clinical Practice Guidelines in Oncology (NCCN Guidelines) for Colon Cancer focuses on systemic therapy options for the treatment of metastatic colorectal cancer (mCRC), because important updates have recently been made to this ...
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Journal ArticleAdv Radiat Oncol · 2021
PURPOSE: Treatment planning for pancreas stereotactic body radiation therapy (SBRT) is a challenging task, especially with simultaneous integrated boost treatment approaches. We propose a deep learning (DL) framework to accurately predict fluence maps from ...
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Journal ArticleJ Med Biogr · November 2020
John Foster Dulles was the United States Secretary of State during the administration of President Dwight D Eisenhower. At the height of the Cold War, Dulles was Eisenhower's emissary, traveling over 450,000 international miles, leading United States forei ...
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Journal ArticleJ Clin Oncol · August 10, 2020
PURPOSE: To develop an evidence-based clinical practice guideline to assist in clinical decision making for patients with locally advanced esophageal cancer. METHODS: ASCO convened an Expert Panel to conduct a systematic review of the more recently publish ...
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Journal ArticleClin Cancer Res · July 1, 2020
A percentage of long-term cancer survivors who receive pelvic irradiation will develop treatment-related late effects, collectively termed pelvic radiation disease. Thus, there is a need to prevent or ameliorate treatment-related late effects in these pati ...
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Journal ArticleJ Natl Compr Canc Netw · July 2020
The NCCN Guidelines for Rectal Cancer provide recommendations for the diagnosis, evaluation, treatment, and follow-up of patients with rectal cancer. These NCCN Guidelines Insights summarize the panel discussion behind recent important updates to the guide ...
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ConferenceJNCCN Journal of the National Comprehensive Cancer Network · July 1, 2020
Excellent long-term outcomes and manageable toxicity are being achieved with contemporary treatment strategies for rectal cancer. Short-course radiotherapy is now an acceptable standard. Total neoadjuvant therapy (TNT), which incorporates induction or cons ...
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Journal ArticleJ Gastrointest Oncol · April 2020
BACKGROUND: Colorectal cancer is the third most common cancer in the United States and associated with significant morbidity and mortality. Within colorectal cancer histologies, squamous cell carcinomas (SCC) are rare compared to adenocarcinomas, with only ...
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Journal ArticleAm J Clin Oncol · March 2020
PURPOSE: NRG/RTOG 0848 was designed to determine whether adjuvant radiation with fluoropyrimidine sensitization improved survival following gemcitabine-based adjuvant chemotherapy for patients with resected pancreatic head adenocarcinoma. In step 1 of this ...
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Journal ArticleFront Oncol · 2020
Purpose: To perform a multi-institutional analysis of patients with synchronous prostate and rectosigmoid cancers. Materials and Methods: A retrospective review of Duke University and Durham Veterans Affairs Medical Center records was performed for men wit ...
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Journal ArticleFront Artif Intell · 2020
Purpose: Treatment planning for pancreas stereotactic body radiation therapy (SBRT) is a difficult and time-consuming task. In this study, we aim to develop a novel deep learning framework to generate clinical-quality plans by direct prediction of fluence ...
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Journal ArticleJ Natl Compr Canc Netw · September 1, 2019
Small bowel adenocarcinoma (SBA) is a rare malignancy of the gastrointestinal tract that has increased in incidence across recent years. Often diagnosed at an advanced stage, outcomes for SBA are worse on average than for other related malignancies, includ ...
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Journal ArticleJ Natl Compr Canc Netw · July 1, 2019
Esophageal cancer is the sixth leading cause of cancer-related deaths worldwide. Squamous cell carcinoma is the most common histology in Eastern Europe and Asia, and adenocarcinoma is most common in North America and Western Europe. Surgery is a major comp ...
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Journal ArticleCancer · June 15, 2019
BACKGROUND: Although the management of localized anal canal squamous cell carcinomas is well established, the role of pelvic chemoradiation (CRT) in the treatment of patients presenting with synchronous metastatic (stage IV) disease is poorly defined. This ...
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Journal ArticlePract Radiat Oncol · 2019
PURPOSE: This study aimed to determine the feasibility and maximally tolerated dose of hypofractionated, conformal radiation therapy (RT) in patients with liver metastases. METHODS AND MATERIALS: Nonsurgical patients with ≤5 liver metastases (sum of maxima ...
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Journal ArticleCurrent Colorectal Cancer Reports · December 1, 2018
Purpose of Review: This review summarizes the relevant literature on the use of total neoadjuvant therapy (TNT) for patients with locally advanced rectal cancer. It highlights the most notable literature published and briefly discusses future directions. R ...
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Journal ArticleInt J Radiat Oncol Biol Phys · November 15, 2018
PURPOSE: Imaging parameters from 18F-fluorodeoxyglucose positron emission tomography (18F-FDG PET) before and after chemoradiation therapy (CRT) for anal canal cancer correlate with clinical outcomes. This prospective, hypothesis-generating pilot study inv ...
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Journal ArticleCancer · September 1, 2018
Hepatocellular carcinoma (HCC) is increasing in incidence and mortality. Although the prognosis remains poor, long-term survival has improved from 3% in 1970 to an 18% 5-year survival rate today. This is likely because of the introduction of well tolerated ...
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Journal ArticleJ Natl Compr Canc Netw · July 2018
The NCCN Guidelines for Anal Carcinoma provide recommendations for the management of patients with squamous cell carcinoma of the anal canal or perianal region. Primary treatment of anal cancer usually includes chemoradiation, although certain lesions can ...
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Journal ArticleJ Natl Compr Canc Netw · July 2018
The NCCN Clinical Practice Guidelines in Oncology (NCCN Guidelines) for Rectal Cancer address diagnosis, staging, surgical management, perioperative treatment, management of recurrent and metastatic disease, disease surveillance, and survivorship in patien ...
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Journal ArticleJ Natl Compr Canc Netw · May 2018
The NCCN Guidelines for Rectal Cancer are now more closely aligned with those for colon cancer. A new MRI-based definition of the rectum has been included and the use of MRI in staging has been elevated in importance. There is a new emphasis on neoadjuvant ...
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Journal ArticleCurr Oncol Rep · April 11, 2018
PURPOSE OF REVIEW: Colorectal cancer has a high global incidence, and standard treatment employs a multimodality approach. In addition to cure, minimizing treatment-related toxicity and improving the therapeutic ratio is a common goal. The following articl ...
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Chapter · April 11, 2018
Pancreatic cancer carries a poor prognosis regardless of stage, and incidence and death rates are increasing. Pancreatic cancer is divided into four general categories, resectable, borderline resectable, locally advanced/unresectable, and metastatic. Only ...
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Journal ArticleJ Natl Compr Canc Netw · April 2018
The NCCN Guidelines for Colon Cancer provide recommendations regarding diagnosis, pathologic staging, surgical management, perioperative treatment, surveillance, management of recurrent and metastatic disease, and survivorship. These NCCN Guidelines Insigh ...
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Journal ArticleJ Clin Oncol · November 10, 2017
Purpose After curative resection of gastric or gastroesophageal junction adenocarcinoma, Intergroup Trial 0116 (Phase III trial of postoperative adjuvant radiochemotherapy for high risk gastric and gastroesophageal junction adenocarcinoma: Demonstrated sup ...
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Journal ArticleProc Natl Acad Sci U S A · September 26, 2017
Antiangiogenic therapy with antibodies against VEGF (bevacizumab) or VEGFR2 (ramucirumab) has been proven efficacious in colorectal cancer (CRC) patients. However, the improvement in overall survival is modest and only in combination with chemotherapy. Thu ...
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Journal ArticleJ Clin Invest · August 1, 2017
Current anti-VEGF therapies for colorectal cancer (CRC) provide limited survival benefit, as tumors rapidly develop resistance to these agents. Here, we have uncovered an immunosuppressive role for nonclassical Ly6Clo monocytes that mediates resistance to ...
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Journal ArticleCancer · May 1, 2017
The treatment of locally advanced rectal cancer (LARC) has benefited from improved surgical techniques and from the implementation of neoadjuvant chemoradiotherapy (CRT), which have markedly decreased the rates of local recurrence. However, distant metasta ...
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Journal ArticleCancer · April 15, 2017
BACKGROUND: Short-course radiotherapy (SC-RT) and long-course chemoradiotherapy (LC-CRT) are accepted neoadjuvant treatments of rectal cancer. In the current study, the authors surveyed US radiation oncologists to assess practice patterns and attitudes reg ...
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Journal ArticleJ Natl Compr Canc Netw · March 2017
This portion of the NCCN Guidelines for Colon Cancer focuses on the use of systemic therapy in metastatic disease. Considerations for treatment selection among 32 different monotherapies and combination regimens in up to 7 lines of therapy have included tr ...
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Journal ArticleJ Thorac Oncol · February 2017
INTRODUCTION: The impact of selective surgical resection for patients with esophageal cancer treated with definitive chemoradiation has not been clearly evaluated long-term. METHODS: NRG (National Surgical Adjuvant Breast and Bowel Project, Radiation Thera ...
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Journal ArticleAnn Surg Oncol · October 2016
BACKGROUND: The optimal approach to patients with locally recurrent, non-metastatic rectal cancer is unclear. This study evaluates the outcomes and toxicity associated with pelvic re-irradiation. METHODS: Patients undergoing re-irradiation for locally recu ...
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Journal ArticleJ Natl Compr Canc Netw · October 2016
Gastric cancer is the fifth most frequently diagnosed cancer and the third leading cause of death from cancer in the world. Several advances have been made in the staging procedures, imaging techniques, and treatment approaches. The NCCN Clinical Practice ...
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Journal ArticleAnn Surg Oncol · March 2016
BACKGROUND: The role of adjuvant radiation therapy (RT) in the treatment of resected, locally advanced colon cancer is unclear. One randomized controlled trial (Intergroup-0130) addressed this question but failed to meet its accrual goals. Since this trial ...
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Journal ArticleCancer · January 1, 2016
Surgery has long been the primary curative modality for localized rectal cancer. Neoadjuvant chemoradiation has significantly improved local control rates and, in a significant minority, eradicated all disease. Patients who achieve a pathologic complete re ...
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Journal ArticleOnco Targets Ther · 2016
Pancreatic cancer is a formidable malignancy with poor outcomes. The majority of patients are unable to undergo resection, which remains the only potentially curative treatment option. The management of locally advanced (unresectable) pancreatic cancer is ...
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Journal ArticleCancer · November 1, 2015
The leadership position of an academic departmental chair can be a positive and rewarding opportunity. These rewards principally stem from the success of the faculty, residents, other trainees, nurses, and everyone supporting the department. With health ca ...
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Journal ArticleJ Natl Cancer Inst · September 2015
BACKGROUND: To date, antiangiogenic therapy has failed to improve overall survival in cancer patients when used in the adjuvant setting (local-regional disease with no detectable systemic metastasis). The presence of lymph node metastases worsens prognosis ...
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Journal ArticleJ Gastrointest Oncol · August 2015
Surgery represents the only potential curative treatment option for patients diagnosed with pancreatic adenocarcinoma. Despite aggressive surgical management for patients deemed to be resectable, rates of local recurrence and/or distant metastases remain h ...
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Journal ArticleJ Gastrointest Oncol · June 2015
The association between human papillomavirus (HPV) and esophageal squamous cell carcinoma (ESCC) has been recognized for over three decades. Recently, multiple meta-analyses have drawn upon existing literature to assess the strength of the HPV-ESCC linkage ...
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Journal ArticleJ Natl Compr Canc Netw · June 2015
The NCCN Guidelines for Rectal Cancer begin with the clinical presentation of the patient to the primary care physician or gastroenterologist and address diagnosis, pathologic staging, surgical management, perioperative treatment, posttreatment surveillanc ...
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Journal ArticleJ Natl Compr Canc Netw · February 2015
Esophageal cancer is the sixth most common cause of cancer deaths worldwide. Adenocarcinoma is more common in North America and Western European countries, originating mostly in the lower third of the esophagus, which often involves the esophagogastric jun ...
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Journal ArticleInt J Radiat Oncol Biol Phys · January 1, 2015
PURPOSE: To report secondary efficacy endpoints of Radiation Therapy Oncology Group protocol 0247, primary endpoint analysis of which demonstrated that preoperative radiation therapy (RT) with capecitabine plus oxaliplatin achieved a pathologic complete re ...
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Chapter · January 1, 2015
Radiation therapy with concurrent chemotherapy is the standard treatment for patients with nonmetastatic squamous cell carcinoma of the anal canal. In the studies that established this approach, high rates of locoregional control have been reported, but th ...
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Journal ArticleJ Gastrointest Oncol · December 2014
BACKGROUND: Cervical esophageal carcinoma (CEC) is an uncommon malignancy. Limited data supports the use of definitive chemoradiotherapy (CRT) as primary treatment. Furthermore, the role of human papillomavirus (HPV) tumor infection in CEC remains unknown. ...
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Journal ArticleJ Gastrointest Oncol · December 2014
BACKGROUND: Ampullary adenocarcinoma is a rare malignancy associated with a relatively favorable prognosis. Given high survival rates in stage I patients reported in small series with surgery alone, adjuvant chemoradiotherapy (CRT) has traditionally been r ...
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Journal ArticleTranslational Cancer Research · December 1, 2014
Intraoperative radiotherapy (IORT) is a technique that allows delivery of a single high dose of radiation to a target volume during surgery. Where conventional external beam radiation therapy (EBRT) is limited by the normal tissue tolerance of abdominal an ...
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Journal ArticleCurr Treat Options Oncol · September 2014
There is significant debate regarding the optimal neoadjuvant regimen for resectable rectal cancer patients. Short-course radiotherapy, a standard approach throughout most of northern Europe, is generally defined as 25 Gy in 5 fractions over the course of ...
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Journal ArticleCancer · July 15, 2014
BACKGROUND: Patterns of failure after neoadjuvant chemoradiotherapy and surgery for esophageal cancer are poorly defined. METHODS: All patients in the current study were treated with trimodality therapy for nonmetastatic esophageal cancer from 1995 to 2009 ...
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Journal ArticleJ Natl Compr Canc Netw · July 2014
The NCCN Guidelines for Colon Cancer address diagnosis, pathologic staging, surgical management, perioperative treatment, posttreatment surveillance, management of recurrent and metastatic disease,and survivorship. This portion of the guidelines focuses on ...
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Chapter · June 20, 2014
This chapter talks about four case studies of radiotherapy for gastrointestinal malignancies. One of the case study, a 65-year-old female presents with painless jaundice and diarrhea for 1 month. Labs show an elevation in liver function tests and total bil ...
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Journal ArticleSemin Radiat Oncol · April 2014
Intraoperative radiation therapy (IORT) techniques allow for the delivery of high doses of radiation therapy while excluding part or all of the nearby dose-limiting sensitive structures. Therefore, the effective radiation dose is increased and local tumor ...
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Journal ArticlePract Radiat Oncol · 2014
PURPOSE: To evaluate the feasibility of a respiratory-gated proton beam therapy for liver tumors. METHODS AND MATERIALS: Fifteen patients were enrolled in a prospective institutional review board-approved protocol. Eligibility criteria included Childs-Pugh ...
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Journal ArticleJournal of Gastrointestinal Oncology · January 1, 2014
Background: Cervical esophageal carcinoma (CEC) is an uncommon malignancy. Limited data supports the use of definitive chemoradiotherapy (CRT) as primary treatment. Furthermore, the role of human papillomavirus (HPV) tumor infection in CEC remains unknown. ...
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Journal ArticleCancer · December 1, 2013
BACKGROUND: In the current study, the authors evaluated long-term outcomes, intraoperative radiotherapy (IORT)-related toxicity, and prognostic factors for overall survival (OS) among patients with unresectable locally advanced pancreatic cancer (LAPC) who ...
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Journal ArticleInt J Radiat Oncol Biol Phys · November 15, 2013
PURPOSE: The long-term update of US GI Intergroup RTOG 98-11 anal cancer trial found that concurrent chemoradiation (CCRT) with fluorouracil (5-FU) plus mitomycin had a significant impact on disease-free survival (DFS) and overall survival (OS) compared wi ...
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Journal ArticleInt J Radiat Oncol Biol Phys · July 1, 2013
PURPOSE: To assess the efficacy of 2 different approaches to neoadjuvant chemoradiation for distal rectal cancers. METHODS AND MATERIALS: One hundred six patients with T3/T4 distal rectal cancers were randomized in a phase 2 study. Patients received either ...
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Journal ArticleInt J Radiat Oncol Biol Phys · May 1, 2013
PURPOSE: A multi-institutional phase 2 trial assessed the utility of dose-painted intensity modulated radiation therapy (DP-IMRT) in reducing grade 2+ combined acute gastrointestinal and genitourinary adverse events (AEs) of 5-fluorouracil (5FU) and mitomy ...
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Journal ArticleJ Natl Compr Canc Netw · May 1, 2013
The NCCN Clinical Practice Guidelines in Oncology for Gastric Cancer provide evidence- and consensus-based recommendations for a multidisciplinary approach for the management of patients with gastric cancer. For patients with resectable locoregional cancer ...
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Journal ArticleJ Natl Compr Canc Netw · May 1, 2013
Although tumor biology and genomics of colon and rectal cancer are no different, patients with locally advanced rectal cancer (LARC) require neoadjuvant fluoropyrimidine-based chemoradiation and total mesorectal excision. In addition to known clinical risk ...
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Journal ArticleJ Natl Compr Canc Netw · May 1, 2013
The NCCN Clinical Practice Guidelines in Oncology for Colon Cancer begin with the clinical presentation of the patient to the primary care physician or gastroenterologist and address diagnosis, pathologic staging, surgical management, perioperative treatme ...
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Journal ArticleJ Gastrointest Oncol · March 2013
BACKGROUND: Ampulla of Vater carcinomas are rare malignancies that have been traditionally treated with radical surgical resection. Given the mortality associated with pancreaticoduodenectomy, some patients may benefit from local resection. A single-instit ...
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Journal ArticleJ Natl Compr Canc Netw · February 1, 2013
The NCCN Clinical Practice Guidelines in Oncology (NCCN Guidelines) for Colon Cancer begin with the clinical presentation of the patient to the primary care physician or gastroenterologist and address diagnosis, pathologic staging, surgical management, per ...
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Journal ArticleRadiat Oncol · January 4, 2013
BACKGROUND: To examine toxicity and outcomes for patients treated with preoperative chemoradiotherapy (CRT) for gastric cancer. METHODS: Patients with gastroesophageal (GE) junction (Siewert type II and III) or gastric adenocarcinoma who underwent neoadjuv ...
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Journal ArticleSemin Radiat Oncol · January 2013
Contemporary randomized trials have demonstrated that radiation therapy combined with chemotherapy and surgery improves survival in both the neoadjuvant and adjuvant treatment of gastroesophageal cancers. Consequently, radiation treatment planning and admi ...
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Journal ArticleFront Oncol · 2013
PURPOSE/OBJECTIVE: While our department is heavily invested in computer-based treatment planning, we historically relied on paper-based charts for management of Radiation Oncology patients. In early 2009, we initiated the process of conversion to an electr ...
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Journal ArticleJ Clin Oncol · December 10, 2012
PURPOSE: On initial publication of GI Intergroup Radiation Therapy Oncology Group (RTOG) 98-11 [A Phase III Randomized Study of 5-Fluorouracil (5-FU), Mitomycin, and Radiotherapy Versus 5-Fluorouracil, Cisplatin and Radiotherapy in Carcinoma of the Anal Ca ...
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Journal ArticleJ Natl Compr Canc Netw · December 1, 2012
These NCCN Clinical Practice Guidelines in Oncology provide recommendations for the management of rectal cancer, beginning with the clinical presentation of the patient to the primary care physician or gastroenterologist through diagnosis, pathologic stagi ...
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Journal ArticleOncoTargets and Therapy · December 1, 2012
Purpose: The Radiation Therapy Oncology Group (RTOG) multi-institutional Phase II study 98-12, evaluating paclitaxel and concurrent radiation (RT) for locally advanced pancreatic cancer, demonstrated a median survival of 11.3 months and a 1-year survival o ...
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Journal Article · November 15, 2012
This chapter provides an overview of the epidemiology, diagnosis, and treatment of the various tumors that arise in the anal canal and surrounding perianal skin. In particular, we focus on the evolution of treatment for squamous cell anal canal cancers, an ...
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Journal ArticleInt J Radiat Oncol Biol Phys · November 1, 2012
PURPOSE: Radiation Therapy Oncology Group (RTOG) trial 9704 was the largest randomized trial to use adjuvant chemoradiation therapy for patients with pancreatic cancer. This report analyzes 5-year survival by serum level of tumor marker CA 19-9 of ≤90 vs > ...
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Journal ArticleRadiother Oncol · October 2012
BACKGROUND: This report analyzes the adherence to radiation therapy protocol guidelines in contemporary Radiation Therapy Oncology Group (RTOG) gastrointestinal trials. We aim to provide insight into current standards and compliance of radiation therapy fi ...
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Journal ArticleInt J Radiat Oncol Biol Phys · July 15, 2012
PURPOSE: Pancreatic neuroendocrine tumors (NET) are rare and have better disease-related outcomes compared with pancreatic adenocarcinoma. Surgical resection remains the standard of care, although many patients present with locally advanced or metastatic d ...
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Journal ArticleJ Surg Oncol · July 1, 2012
The objective of this study was to compare survival between all patients with radiographically resectable adenocarcinoma of the proximal pancreas who underwent preoperative chemoradiation therapy (PRE-OP CRT) or surgical exploration first (SURGERY) with "i ...
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Journal ArticleInt J Radiat Oncol Biol Phys · July 1, 2012
PURPOSE: To define a male and female pelvic normal tissue contouring atlas for Radiation Therapy Oncology Group (RTOG) trials. METHODS AND MATERIALS: One male pelvis computed tomography (CT) data set and one female pelvis CT data set were shared via the Im ...
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Journal ArticleInt J Radiat Oncol Biol Phys · July 1, 2012
PURPOSE: Pancreatic neuroendocrine tumors (pNET) are rare neoplasms associated with poor outcomes without resection, and involved surgical margins are associated with a worse prognosis. The role of adjuvant radiotherapy (RT) in these patients has not been ...
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Journal ArticleCurrent Colorectal Cancer Reports · June 1, 2012
The management of rectal cancer has seen significant advances in surgery, radiation therapy, and chemotherapy in recent years. These advances have translated into improved rates of local and distant disease control, survival, and quality of life for these ...
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Journal ArticleAnn Surg Oncol · May 2012
BACKGROUND: Ampullary carcinoma is a rare malignancy. Despite radical resection, survival rates remain low with high rates of local failure. We performed a single-institution outcomes analysis to define the role of concurrent chemoradiotherapy (CRT) in add ...
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Journal ArticleInt J Radiat Oncol Biol Phys · April 1, 2012
PURPOSE: Patients with recurrent malignant gliomas treated with stereotactic radiosurgery (SRS) and multiagent systemic therapies were reviewed to determine the effects of patient- and treatment-related factors on survival and toxicity. METHODS AND MATERIA ...
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Journal ArticleJ Natl Compr Canc Netw · April 2012
The workup and management of squamous cell anal carcinoma, which represents the most common histologic form of the disease, are addressed in the NCCN Clinical Practice Guidelines in Oncology (NCCN Guidelines) for Anal Carcinoma. These NCCN Guidelines Insig ...
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Journal ArticleInt J Radiat Oncol Biol Phys · April 1, 2012
PURPOSE: The strategy of definitive chemoradiation with selective surgical salvage in locoregionally advanced esophageal cancer was evaluated in a Phase II trial in Radiation Therapy Oncology Group (RTOG)-affiliated sites. METHODS AND MATERIALS: The study ...
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Journal ArticleInt J Radiat Oncol Biol Phys · March 15, 2012
PURPOSE: To evaluate the rate of pathologic complete response (pCR) and the toxicity of two neoadjuvant chemoradiotherapy (chemoRT) regimens for Stage T3-T4 rectal cancer in a randomized Phase II study. METHODS AND MATERIALS: Patients with Stage T3 or T4 r ...
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Journal ArticleInt J Radiat Oncol Biol Phys · February 1, 2012
PURPOSE: In Radiation Therapy Oncology Group 9704, as previously published, patients with resected pancreatic adenocarcinoma received continuous infusion 5-FU and concurrent radiotherapy (5FU-RT). 5FU-RT treatment was preceded and followed by randomly assi ...
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Journal ArticleMed Dosim · 2012
The risk of sterility in males undergoing radiotherapy in the pelvic region indicates the use of a shielding device, which offers protection to the testes for patients wishing to maintain fertility. The use of such devices in the realm of intensity-modulat ...
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Journal ArticleInternational Journal of Biomedical Engineering and Technology · January 1, 2012
4D CT image sets are used to encode patient-organ motion and to calculate the dose delivered during each respiratory phase. The dose-per-phase is summarised to the total dose via deformable registration. The system incorporates the actual beam parameters a ...
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Journal ArticleInt J Radiat Oncol Biol Phys · December 1, 2011
PURPOSE: To determine the rate of treatment deviations during combined modality therapy for rectal cancer in elderly patients aged 75 years and older. METHODS AND MATERIALS: We reviewed the records of consecutively treated patients with rectal cancer aged ...
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Journal ArticleInt J Radiat Oncol Biol Phys · December 1, 2011
PURPOSE: Lymph node status is an important predictor of survival in pancreatic cancer. We performed a secondary analysis of Radiation Therapy Oncology Group (RTOG) 9704, an adjuvant chemotherapy and chemoradiation trial, to determine the influence of lymph ...
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Journal ArticleInt J Radiat Oncol Biol Phys · November 1, 2011
PURPOSE: Extrahepatic cholangiocarcinoma is an uncommon but lethal malignancy. We analyzed the role of definitive chemoradiotherapy for patients with nonmetastatic, locally advanced extrahepatic cholangiocarcinoma treated at a single institution. METHODS A ...
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Journal ArticleJNCCN Journal of the National Comprehensive Cancer Network · November 1, 2011
The panel believes that a multidisciplinary approach is necessary for managing colorectal cancer. The panel endorses the concept that treating patients in a clinical trial has priority over standard or accepted therapy. The recommended surgical procedure f ...
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Journal ArticleOncology · August 12, 2011
The 5-year overall survival of patients with pancreatic cancer is approximately 5%, with potentially resectable disease representing the curable minority. Although surgical resection remains the cornerstone of treatment, local and distant failure rates are ...
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Journal ArticleSemin Radiat Oncol · July 2011
The management of rectal cancer has undergone significant evolution with advances in surgery, radiation therapy, and chemotherapy. These advances have translated into improved rates of local control, survival, and quality of life. More recently, the integr ...
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Journal ArticleOncology (Williston Park) · July 2011
The 5-year overall survival of patients with pancreatic cancer is approximately 5%, with potentially resectable disease representing the curable minority. Although surgical resection remains the cornerstone of treatment, local and distant failure rates are ...
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Journal ArticleGastrointestinal Cancer Research · July 1, 2011
Background: Pancreatic ductal adenocarcinoma (PDAC) arising in intraductal papillary mucinous neoplasms (IPMN) may represent a different biologic entity than classic PDAC, and there is little evidence to inform adjuvant treatment decisions. The purpose of ...
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Journal ArticleCurr Oncol Rep · June 2011
Concurrent radiation therapy and chemotherapy is the primary treatment for patients with squamous cell tumors of the anal canal, and is also employed in the neoadjuvant setting for patients with stage II and III adenocarcinoma of the rectum. There is const ...
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Journal ArticleAnn Surg Oncol · May 2011
BACKGROUND: The impact of the addition of gemcitabine to 5-fluorouracil (5-FU) chemoradiation (CRT) on 5-year overall survival (OS) in resected pancreatic adenocarcinoma are presented with updated results of a phase III trial. METHODS: After resection of p ...
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Journal ArticleGastrointestinal Cancer Research · March 1, 2011
Background: Longitudinal quality of life (QoL) was compared for patients with esophageal cancer receiving definitive chemoradiotherapy (CRT) with conventional-dose (CD) vs. high-dose (HD) radiotherapy as used in the RTOG phase III 94-05 trial (Intergroup 0 ...
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ConferenceMedical Physics · January 1, 2011
Purpose: To implement a clinical protocol for the use of scrotal shields for anal cancer IMRT treatment. Methods and Results: (1) Simulation The patient is immobilized in a full‐body alpha‐cradle mold in the frog‐leg position. Further, the mold is built up ...
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Journal ArticleInt J Radiat Oncol Biol Phys · December 1, 2010
PURPOSE: Intensity-modulated radiation therapy (IMRT) has the potential to reduce toxicities associated with chemoradiotherapy in the treatment of anal cancer. This study reports the results of using IMRT in the treatment of anal cancer. METHODS AND MATERI ...
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Journal ArticleJ Clin Oncol · December 1, 2010
PURPOSE: To determine whether increased duration of radiation therapy (RT) and overall treatment (RX) time has a detrimental effect in anal cancer. PATIENTS AND METHODS: Data from Radiation Therapy Oncology Group (RTOG) 87-04 and RTOG 98-11 trials were com ...
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Journal ArticleCancer · September 1, 2010
BACKGROUND: Only 4 prospective randomized phase 3 trials have been reported for anal cancer. A prognostic factor analysis for anal cancer from a prospective database has been published from only 1 study (N = 110). To confirm and uncover new prognostic fact ...
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Journal ArticleOncology (Williston Park) · August 2010
The treatment of cancer of the anal canal has changed significantly over the past several decades. Although the abdominoperineal resection (APR) was the historical standard of care, a therapeutic paradigm shift occurred with the seminal work of Nigro, who ...
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Journal ArticleOncology (Williston Park, N.Y.) · August 1, 2010
The treatment of cancer of the anal canal has changed significantly over the past several decades. Although the abdominoperineal resection (APR) was the historical standard of care, a therapeutic paradigm shift occurred with the seminal work of Nigro, who ...
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Journal ArticleInt J Radiat Oncol Biol Phys · July 15, 2010
PURPOSE: To review the outcomes and tolerability of full-dose chemoradiation in elderly patients aged 75 years or older with localized pancreatic cancer. METHODS AND MATERIALS: We retrospectively reviewed patients aged 75 years or older with nonmetastatic ...
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Journal ArticleClin Cancer Res · May 15, 2010
DNA methylation changes in rectal cancer may serve as a new screening marker and a tool for monitoring recurrence. Importantly, these changes may also function as a predictive marker to allow appropriate exclusion of (neo)adjuvant therapies in patients at ...
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Journal ArticleCurr Oncol Rep · May 2010
Concurrent radiotherapy and chemotherapy (5-fluorouracil and mitomycin-C) is established as a sphincter-preserving treatment for squamous cell carcinoma of the anal canal. However, there is room for improvement in rates of tumor control as well as a need t ...
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Journal ArticleDis Esophagus · May 2010
Randomized trials of chemoradiation for esophageal cancer have included very few patients age > or = 75. In this retrospective study, we describe the outcomes and toxicity of full-dose chemoradiation in elderly patients with esophageal cancer. Patients, ag ...
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Journal ArticleClin Colorectal Cancer · April 2010
While surgery plays a central role in the management of all stages of operable rectal cancer, nonoperative approaches for both early-stage and locally advanced disease are being explored. This comprehensive review summarizes the current literature regardin ...
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Journal ArticleJ Natl Compr Canc Netw · January 2010
Radiation therapy (RT) is established as the primary treatment of squamous cell carcinoma of the anus. Multiple randomized trials have shown that combined modality therapy with RT, 5-fluorouracil, and mitomycin-C results in high rates of local control, dis ...
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Journal ArticleOncologist · 2010
INTRODUCTION: Bevacizumab is increasingly being tested with neoadjuvant regimens in patients with localized cancer, but its effects on metastasis and survival remain unknown. This study examines the long-term outcome of clinical stage II/III rectal cancer ...
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Journal ArticleOncologist · 2010
We explored plasma and urinary concentrations of two members of the vascular endothelial growth factor (VEGF) family and their receptors as potential response and toxicity biomarkers of bevacizumab with neoadjuvant chemoradiation in patients with localized ...
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Journal ArticleJ Clin Oncol · November 20, 2009
Pancreatic ductal adenocarcinoma (PDAC) is the fourth leading cause of cancer mortality, despite significant improvements in diagnostic imaging and operative mortality rates. The 5-year survival rate remains less than 5% because of microscopic or gross met ...
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Journal ArticleOncology (Williston Park) · November 15, 2009
The contemporary treatment of anal cancer is combined-modality therapy with radiation therapy, fluorouracil, and mitomycin. This therapy results in long-term disease-free survival and sphincter preservation in the majority of patients. Tempering these posi ...
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Journal ArticleONCOLOGY · November 15, 2009
The contemporary treatment of anal cancer is combined-modality therapy with radiation therapy, fluorouracil, and mitomycin. This therapy results in long-term disease-free survival and sphincter preservation in the majority of patients. Tempering these posi ...
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Journal ArticleCancer Res · October 15, 2009
Clinical studies converge on the observation that circulating cytokines are elevated in most cancer patients by anti-vascular endothelial growth factor (VEGF) therapy. However, the source of these molecules and their relevance in tumor escape remain unknow ...
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Journal ArticleClin Oncol (R Coll Radiol) · September 2009
Over the past 30 years, significant advances have been made in the integration of radiation therapy and chemotherapy in the treatment of patients with localised gastrointestinal malignancies. The therapeutic goal of chemoradiotherapy is to enhance local co ...
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Journal ArticleJ Clin Oncol · September 1, 2009
PURPOSE: The primary objective of this study was to assess the 1-year survival of patients with locally advanced, unresectable pancreatic cancer treated with the combination of bevacizumab, capecitabine, and radiation. Secondary end points were toxicity, p ...
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Journal ArticleInt J Radiat Oncol Biol Phys · July 1, 2009
PURPOSE: To develop a Radiation Therapy Oncology Group (RTOG) atlas of the elective clinical target volume (CTV) definitions to be used for planning pelvic intensity-modulated radiotherapy (IMRT) for anal and rectal cancers. METHODS AND MATERIALS: The Gast ...
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Journal ArticleJ Clin Oncol · June 20, 2009
PURPOSE: To assess the safety and efficacy of neoadjuvant bevacizumab with standard chemoradiotherapy in locally advanced rectal cancer and explore biomarkers for response. PATIENTS AND METHODS: In a phase I/II study, 32 patients received four cycles of th ...
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Journal ArticleNat Rev Clin Oncol · June 2009
No validated biological markers (or biomarkers) currently exist for appropriately selecting patients with cancer for antiangiogenic therapy. Nor are there biomarkers identifying escape pathways that should be targeted after tumors develop resistance to a g ...
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Journal ArticleCurr Oncol Rep · May 2009
Squamous cell carcinoma of the anal canal historically has been treated with abdominoperineal resection, resulting in high rates of morbidity and local recurrence. Pioneering work led to the finding that radiation therapy (RT) combined with 5-fluorouracil ...
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Journal ArticleJ Clin Oncol · April 20, 2009
PURPOSE: The investigational arm of INT0116, a fluorouracil (FU) and leucovorin-containing chemoradiotherapy regimen, is a standard treatment for patients with resected gastric cancer with a 2-year disease-free survival rate (DFS) of 52%. Toxicity is also ...
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Journal ArticleJ Clin Oncol · March 1, 2009
PURPOSE: The US Gastrointestinal Intergroup Radiation Therapy Oncology Group 98-11 anal carcinoma trial showed that cisplatin-based concurrent chemoradiotherapy resulted in a significantly higher rate of colostomy compared with mitomycin-based therapy. Est ...
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Journal Article · January 14, 2009
The liver is the most common site for blood-borne metastasis from colorectal cancers. Until the early 1980s, it was generally accepted that hepatic metastases from colorectal cancer represented just one site in a wide systemic dissemination of tumor, and h ...
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ConferenceMedical Physics · January 1, 2009
Objectives: To investigate the feasibility of using an intensity modulated arc technique for multi‐focal intracranial stereotactic radiosurgery with a single isocenter setup to significantly decrease the treatment time. Methods: A Novalis Tx linear acceler ...
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ConferenceMedical Physics · January 1, 2009
Objectives: To compare localization accuracy using both conventional frame‐based localizers and cone‐beam CT (CBCT) images for stereotactic radiosurgery (SRS). Methods: A SRS geometric phantom was used to verify the localization accuracy based on a SRS loc ...
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Journal ArticleInt J Radiat Oncol Biol Phys · January 1, 2009
PURPOSE: Extrahepatic cholangiocarcinoma is a rare malignancy. Despite radical resection, survival remains poor, with high rates of local and distant failure. To clarify the role of radiotherapy with chemotherapy, we performed a retrospective analysis of r ...
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Journal ArticleJ Clin Oncol · December 20, 2008
PURPOSE: CA 19-9 is an important tumor marker in patients with pancreatic adenocarcinoma. A secondary end point of Radiation Therapy Oncology Group trial 9704 was prospective evaluation of the ability of postresectional CA 19-9 to predict survival. METHODS ...
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Journal ArticleSeminars in Colon and Rectal Surgery · December 1, 2008
Significant advances have been made in the treatment of rectal cancer patients. Phase III studies have demonstrated the efficacy of neoadjuvant and adjuvant radiation therapy and chemotherapy in improving the outcome of patients with locally advanced disea ...
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Journal Article · December 1, 2008
Solid tumors require blood vessels for growth, and many new cancer therapies are targeted against the tumor vasculature. The widely held view is that these antiangiogenic therapies destroy the tumor vasculature, thereby depriving the tumor of oxygen and nu ...
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Journal ArticleJ Natl Compr Canc Netw · October 2008
Radiation therapy serves an integral role in the primary and adjuvant treatment of esophagus cancer. Radiation techniques continue to improve, providing more accurate localization of the tumor while limiting dose to normal structures. This article reviews ...
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Journal ArticleJ Clin Oncol · October 1, 2008
PURPOSE: Two nonoperative approaches (one without fluorouracil) using induction chemotherapy and then definitive chemoradiotherapy developed at two centers were compared in patients with localized esophageal cancer (LEC). The primary end point was to asses ...
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Journal ArticleInt J Radiat Oncol Biol Phys · September 1, 2008
PURPOSE: Radiation Therapy Oncology Group (RTOG) 92-08 began as a single arm, Phase II trial for patients with anal cancer consisting of radiation (RT) + 5-flourouracil + mitomycin-C with a mandatory 2-week break and was amended after completion to evaluat ...
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Journal ArticleONCOLOGY · August 1, 2008
In summary, there is considerable promise for combinations of immunotherapy with radiotherapy, but clinical experience is still limited. Preclinical models with greater relevance to human tumors should be used to continue identifying the best combinations ...
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Journal ArticleCurr Oncol Rep · May 2008
Radiation plays an important role in the multimodal management of tumors of the gastrointestinal (GI) system. Intensity-modulated radiation therapy (IMRT) is a technological development that was introduced to limit the acute and late toxicities commonly as ...
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Journal ArticleJAMA · April 23, 2008
CONTEXT: Chemoradiation as definitive therapy is the preferred primary therapy for patients with anal canal carcinoma; however, the 5-year disease-free survival rate from concurrent fluorouracil/mitomycin and radiation is only approximately 65%. OBJECTIVE: ...
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Journal ArticleExpert Rev Anticancer Ther · April 2008
Although radiation therapy has an established role to play in the management of rectal and anal tumors, there are often treatment-related morbidities that negatively impact on patients. There is a long-standing interest in radiation oncology on maximizing ...
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Journal ArticleFuture Oncol · April 2008
Pancreatic cancer remains a highly challenging problem in oncology. Oncologists continue to search for therapies that are more effective than those currently available to improve on the existing poor treatment results. Persistence of both systemic and loca ...
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Journal ArticleTechnol Cancer Res Treat · April 2008
This report describes the technique and initial experience using cone beam CT (CBCT) for localization of treatment targets in patients undergoing stereotactic body radiation therapy (SBRT). Patients selected for SBRT underwent 3-D or 4-D CT scans in a cust ...
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Journal ArticleInt J Radiat Oncol Biol Phys · March 15, 2008
PURPOSE: Concurrent chemotherapy and radiation therapy (RT) are used to treat patients with esophageal cancer. The optimal combination of chemotherapeutic agents with RT is not well established. We evaluated the safety and preliminary efficacy of a combina ...
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Journal ArticleJAMA · March 5, 2008
CONTEXT: Among patients with locally advanced metastatic pancreatic adenocarcinoma, gemcitabine has been shown to improve outcomes compared with fluorouracil. OBJECTIVE: To determine if the addition of gemcitabine to adjuvant fluorouracil chemoradiation (c ...
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Journal ArticleJ Clin Oncol · March 1, 2008
PURPOSE: The primary treatment modality for patients with carcinoma of the esophagus or gastroesophageal junction has been surgery, although primary radiation therapy with concurrent chemotherapy produces similar results. As both have curative potential, t ...
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Chapter · January 1, 2008
The goal of this book is to provide practical guidance for anyone who is interested in initiating a teledermatology program or expanding their current system. This book was written for a wide audience to include anyone in a private practice, academic cente ...
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Journal ArticleInt J Radiat Oncol Biol Phys · December 1, 2007
PURPOSE: To report patterns of disease recurrence after resection of adenocarcinoma of the duodenum and compare outcomes between patients undergoing surgery only vs. surgery with concurrent chemotherapy and radiation therapy (CT-RT). METHODS AND MATERIALS: ...
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Journal ArticleInt J Radiat Oncol Biol Phys · December 1, 2007
PURPOSE: To assess the impact of new technologies on deviation rates in radiation therapy (RT). METHODS AND MATERIALS: Treatment delivery deviations in RT were prospectively monitored during a time of technology upgrade. In January 2003, our department had ...
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Journal ArticleClin Cancer Res · November 15, 2007
Over the past 25 years, significant advances have been made in the management of patients with rectal cancer. Phase III studies have shown the efficacy of postoperative radiation therapy and chemotherapy in improving local control and survival of patients ...
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Journal ArticleClin Cancer Res · November 15, 2007
The 2007 Santa Monica Conference on Assessing and Treating Early-Stage Colon and Rectal Cancer, a multidisciplinary meeting of leaders in surgery, medical and radiation oncology, and pathology, was convened on January 12 to 13, 2007. The purpose of the mee ...
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Journal ArticleInt J Radiat Oncol Biol Phys · November 1, 2007
PURPOSE: To compare a neoadjuvant regimen of cisplatin/5-fluorouracil (5-FU) and concurrent radiation therapy (RT) with paclitaxel-based regimens and RT in the management of operable esophageal (EC)/gastroesophageal junction (GEJ) cancer. METHODS AND MATER ...
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Journal ArticleONCOLOGY · October 1, 2007
Both antiangiogenic and vascular-targeted therapies hold great promise. The approval of some antiangiogenic agents in combination with other therapies bode well for the future clinical use of these agents. Similarly, the increased interest in vascular-targ ...
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Journal ArticleJ Clin Oncol · September 10, 2007
Although still in very early stages of clinical development, the combination of antiangiogenics with contemporary chemoradiotherapy regimens has emerged as a feasible and promising approach to many cancers. We review the rationale and the current understan ...
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Journal ArticleClin Colorectal Cancer · September 2007
The management of rectal cancer has undergone significant evolution with advances in surgery, radiation therapy, and chemotherapy. These advances have translated into improved rates of local control, survival, and quality of life. More recently, the integr ...
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Journal ArticleJ Clin Oncol · August 20, 2007
PURPOSE: We update Radiation Therapy Oncology Group trial 8911 (USA Intergroup 113), a comparison of chemotherapy plus surgery versus surgery alone for patients with localized esophageal cancer. The relationship between resection type and between tumor res ...
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Journal ArticleOncology (Williston Park) · August 2007
Epidermal growth factor receptor (EGFR) and vascular endothelial growth factor (VEGF) are often overexpressed in colorectal cancer and are associated with inferior outcomes. Based on successful randomized phase III trials, anti-EGFR and anti-VEGF therapeut ...
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Journal ArticleClin Adv Hematol Oncol · August 2007
Randomized trials have demonstrated that radiation therapy improves local control in patients with rectal cancer. Because pelvic irradiation may result in acute and/or late morbidity, identification of patients with the highest probability of benefiting fr ...
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Journal ArticleInt J Radiat Oncol Biol Phys · June 1, 2007
PURPOSE: The overexpression of vascular endothelial growth factor (VEGF) is associated with poor outcomes in colorectal cancer patients. Bevacizumab, a VEGF inhibitor, enhances the effects of chemotherapy and radiation therapy on tumor cytotoxicity in prec ...
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Journal ArticleTrends Mol Med · June 2007
Despite setbacks, the clinical development of antiangiogenic agents has accelerated remarkably over the past 3-4 years. Consequently, there are currently three direct inhibitors of the VEGF pathway approved for use in cancer therapy. Other agents that bloc ...
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Journal ArticleNat Clin Pract Oncol · May 2007
BACKGROUND: Localized rectal cancer responds well to 5-fluorouracil and radiation-based regimens. A phase I-II trial is currently testing the efficacy of adding bevacizumab, a VEGF-specific antibody, to standard chemoradiotherapy. The case presented here i ...
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Journal ArticleInt J Radiat Oncol Biol Phys · May 1, 2007
PURPOSE: To investigate whether the effect of organ motion can be further reduced with the application of a cardiac gating technique, together with respiratory gating. METHODS AND MATERIALS: Axial and coronal images through the heart and liver were continu ...
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Journal ArticleCurrent Colorectal Cancer Reports · May 1, 2007
Vascular endothelial growth factor (VEGF)-overexpressed in colorectal cancer-is associated with disease progression and inferior survival. Based on successful, randomized, phase III trials, anti-VEGF therapeutics have entered clinical practice. Bevacizumab ...
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Journal ArticleRadiother Oncol · April 2007
PURPOSE: An artificial intelligence (AI) guided method for parameter adjustment of inverse planning was implemented on a commercial inverse treatment planning system. For evaluation purpose, four typical clinical cases were tested and the results from both ...
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Journal ArticleInt J Radiat Oncol Biol Phys · March 15, 2007
PURPOSE: Concurrent chemotherapy and radiation therapy (RT) are used to treat patients with esophageal cancer. The optimal combination of chemotherapeutic agents with RT is undefined. We evaluated a combination of capecitabine, carboplatin, and paclitaxel ...
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Journal ArticleJ Clin Oncol · March 10, 2007
Intraoperative radiation therapy (IORT) is the delivery of irradiation at the time of an operation. This is performed by different techniques including intraoperative electron beam techniques and high-dose rate brachytherapy. IORT is usually given in combi ...
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Journal ArticleMedical Physics · January 1, 2007
There has been significant progress in the technical delivery of radiation therapy in GI cancer. These innovations have included the use of intensity modulated radiation therapy, image guidance radiation therapy, and stereotactic radiation therapy. One of ...
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Chapter · January 1, 2007
The targeting of tumor angiogenesis has evolved into one of the most widely pursued therapeutic strategies. However, as of yet, no antiangiogenic agent used as a monotherapy has demonstrated a survival benefit in a randomized Phase III trial. The combinati ...
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Journal ArticleCancer J · 2007
Of the 33,370 patients diagnosed with pancreatic carcinoma in the United States this year, approximately 20% will present with resectable disease. At present, surgery offers the only means of cure. Radiation therapy and chemotherapy approaches have been us ...
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Journal ArticleClin Colorectal Cancer · January 2007
Intensity-modulated photon radiation therapy (RT; IMRT) and proton therapy are advanced radiation technologies that permit improved conformation of radiation dose to target structures while limiting irradiation of surrounding normal tissues. Application of ...
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ConferenceMedical Physics · January 1, 2007
Purpose: To compare treatment isocenter placement based on OBI 2D kV imaging and OBI 3D‐CBCT imaging for patients undergoing SBRT, and compare the CBCT based isocenter shifts among liver, lung and spine lesions. Material and Methods: 119 SBRT fractions wer ...
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ConferenceMedical Physics · January 1, 2007
Purpose: Single Photon Emission Computed Tomography (SPECT) onboard radiation therapy machines could enable the use of functional and molecular imaging in guiding the therapy beam and in monitoring disease. Costs and spatial constraints of onboard SPECT mi ...
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ConferenceMedical Physics · January 1, 2007
Purpose: To apply on‐boardmdash;image (OBI) guided amplitude gating for breath‐hold treatment and to assess treatment margin adequacy by analyzing the isocenter placement based on orthogonal 2D kV radiographs and 3D cone‐beam CT (CBCT) acquired under ampli ...
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Journal ArticleEur J Surg Oncol · December 2006
AIMS: To report the effect on outcome of selection in patients receiving intra-operative electron beam radiation (IOERT) and external beam radiation therapy (EBRT). METHODS: One hundred and three patients treated for primary RS were studied. Median follow- ...
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Journal ArticleSemin Oncol · October 2006
Despite the routine use of adjuvant and neoadjuvant chemoradiotherapy, patients with advanced rectal tumors experience significant rates of treatment failure and disease recurrence. Resistance to radiation is a particular problem. Adding a vascular endothe ...
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Journal ArticleJ Clin Oncol · August 20, 2006
PURPOSE: Preoperative therapy for localized gastric cancer has considerable appeal. We hypothesized that, in a cooperative group setting, preoperative chemoradiotherapy would induce a 20% pathologic complete response (pathCR) rate. Combined-modality therap ...
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Journal ArticleInt J Radiat Oncol Biol Phys · July 15, 2006
PURPOSE: Phase I-II data regarding neoadjuvant cisplatin, 5-fluorouracil (5-FU), paclitaxel, and radiation (PFT-R) from our institution demonstrated encouraging pathologic complete response (pCR) rates. This article updates our experience with PFT-R, and c ...
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Journal ArticleOncology (Williston Park) · July 2006
The prognosis of patients with biliary cancers is poor. Although surgery is potentially curative in selected patients, local recurrence is a common pattern of failure. Adjuvant or neoadjuvant radiation therapy improves local control and possibly survival. ...
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Journal ArticleInt J Radiat Oncol Biol Phys · May 1, 2006
PURPOSE: To generate on-board digital tomosynthesis (DTS) and reference DTS images for three-dimensional image-guided radiation therapy (IGRT) as an alternative to conventional portal imaging or on-board cone-beam computed tomography (CBCT). METHODS AND MA ...
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Journal ArticleJ Clin Oncol · March 20, 2006
PURPOSE: Circulating endothelial cells (CECs) and progenitor cells are currently evaluated as potential biomarkers of antiangiogenic therapy. CD146 is considered a panendothelial-specific marker, but its utility as a CEC marker in cancer patients remains u ...
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Journal ArticleOncology (Williston Park) · February 2006
Colon cancer is a major public health problem. The primary treatment is resection. For patients with early-stage disease, surgery results in excellent survival rates. In contrast, patients with locally advanced tumors arising in "anatomically immobile" seg ...
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Journal ArticleJ Clin Oncol · February 1, 2006
PURPOSE: Overexpression of epidermal growth factor receptor (EGFR) has been associated with aggressive tumor phenotypes, chemotherapy, and radiation resistance, as well as poor survival in preclinical and clinical models. The EGFR inhibitor gefitinib poten ...
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Journal ArticleJ Clin Oncol · February 1, 2006
PURPOSE: To evaluate the rate of pathologic complete response and toxicity of neoadjuvant chemoradiation for advanced T3/T4 distal rectal cancers in a randomized phase II study PATIENTS AND METHODS: Patients with clinical T3/T4 distal rectal cancers were r ...
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Journal ArticleCancer · January 15, 2006
BACKGROUND: Whether stool DNA abnormalities arise solely from colorectal neoplastic lesions or are due to more pervasive field effects is not known. In the current study, the authors conducted a prospective multicenter study to evaluate the performance of ...
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ConferenceMedical Physics · January 1, 2006
Purpose: To develop and assess a technique using cone‐beam CT (CBCT) to localize treatment targets for stereotactic body radiation therapy (SBRT). Material and Methods: Patients selected for SBRT had 3‐D or 4‐D CT simulation with immobilization. GTV, CTV, ...
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ConferenceMedical Physics · January 1, 2006
Purpose: Functional and molecular (F&M) imaging onboard radiation therapy machines would allow for targeting of functional tumor volume, and avoiding of healthy tissue, by guiding and modifying radiation beams, in the treatment room, based on real‐time F&M ...
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ConferenceMedical Physics · January 1, 2006
Purpose: The internal target volume (ITV) could be determined using 4D CT simulation images and be verified in the treatment room using on‐board cone‐beam CT (CBCT) since the CBCT projection images are acquired over approximately 10 breathing cycles. This ...
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ConferenceMedical Physics · January 1, 2006
Purpose: We have applied OBI guidance together with a respiratory gating system to effectively control patient positioning for amplitude gating treatment with breath hold. The deep inspiration breath‐hold treatment has been proven effective in reducing the ...
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ConferenceMedical Physics · January 1, 2006
Purpose: To implement a clinical tool for off‐line review of Cone‐Beam Computed Tomography (CBCT) based 3D target verification and localization. Methods and Materials: An in‐house 3D target localization and verification tool is being developed to allow phy ...
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ConferenceMedical Physics · January 1, 2006
Purpose: To develop a method for modeling the dynamic relationship between patient surface motion and internal target motion using 4DCT data. Then, to verify its capability to interpolate internal target motion with real‐time patient surface motion informa ...
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Journal ArticleInt J Radiat Oncol Biol Phys · July 15, 2005
PURPOSE: Primary adenocarcinoma of the gallbladder is a rare malignancy. To better define the role of adjuvant radiation therapy and chemotherapy, a retrospective analysis of the outcome of patients undergoing surgery and adjuvant therapy was undertaken. M ...
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Journal ArticleJ Clin Oncol · July 10, 2005
Of the 32,180 patients diagnosed with pancreatic carcinoma in the United States this year, approximately 40% will present with locally advanced disease. Radiotherapeutic approaches are often employed because these patients have unresectable tumors by virtu ...
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Journal ArticleJ Clin Oncol · April 1, 2005
PURPOSE: A Patterns of Care Study of patients treated from 1996 to 1999 evaluated the national practice for patients receiving radiation therapy for carcinoma of the esophagus in the United States. METHODS: A national survey was conducted at 59 institution ...
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Journal ArticleInt J Radiat Oncol Biol Phys · April 1, 2005
PURPOSE: To describe approaches to four-dimensional (4D) treatment planning, including acquisition of 4D-CT scans, target delineation of spatio-temporal image data sets, 4D dose calculations, and their analysis. METHODS AND MATERIALS: The study included pa ...
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Journal ArticleInt J Radiat Oncol Biol Phys · April 1, 2005
PURPOSE: The correlation of the respiratory motion of external patient markers and abdominal tumors was examined. Data of this type are important for image-guided therapy techniques, such as respiratory gating, that monitor the movement of external fiducia ...
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Journal ArticleRadiology · March 2005
PURPOSE: To use first-pass perfusion computed tomography (CT) to prospectively investigate tumor vascularity in rectal cancer and to determine whether any of the perfusion parameters would predict tumor response to chemotherapy and radiation therapy. MATER ...
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Journal ArticleAnn Surg · February 2005
SUMMARY BACKGROUND DATA: To analyze the effects of a treatment program of intraoperative electron beam radiation therapy (IOERT) and external beam radiation therapy and chemotherapy on the outcome of patients with unresectable or locally advanced pancreati ...
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Journal ArticleSemin Oncol · February 2005
Significant gains have been achieved in the integration of radiation therapy (RT) and chemotherapy with surgery in the management of patients with localized rectal cancer. Treatment combinations of RT and chemotherapy with surgery have evolved to neoadjuva ...
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Journal ArticlePancreatology · 2005
BACKGROUND: Immunotherapy has been proposed as a novel treatment for pancreatic cancer. However, patients with pancreatic cancer have been observed to have depressed immune responses, suggesting that immunotherapy might have limited utility in this group o ...
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ConferenceMedical Physics · January 1, 2005
Purpose: To quantify the degree of normal organ motion due to the respiratory and cardiac cycles. Better definition of such motion may be useful in defining field margins and in assessing the utility of gating technologies. Method and Materials: Four healt ...
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ConferenceMedical Physics · January 1, 2005
Purpose: Copper labeled diacetyl‐bis(N4‐methylthiosemicarbazone) (Cu‐ATSM) has been reported to selectively bind to hypoxic tumor cells. This makes Cu‐ATSM PET a promising modality to image tumor hypoxia. However, intravascular Cu‐ATSM that is not related ...
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Journal ArticleRadiother Oncol · December 2004
BACKGROUND AND PURPOSE: Clinical target volumes of the thorax and abdomen are typically expanded to account for inter- and intrafractional organ motion. Usually, such expansions are based on clinical experience and planar observations of target motion duri ...
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Journal ArticleSurg Oncol Clin N Am · October 2004
Pancreatic cancer is the fourth leading cause of death in men and fifth in women in the United States. The median survival is 8 to 12 months for patients with locally advanced and unresectable disease and only 3 to 6 months for those with metastatic diseas ...
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Journal ArticleJ Clin Oncol · August 15, 2004
PURPOSE: Some patients with colon cancer have a high risk of local recurrence postoperatively. This trial was undertaken to determine whether radiation therapy added to an adjuvant chemotherapy regimen improves outcome in high-risk patients. PATIENTS AND M ...
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Journal ArticleJ Clin Oncol · May 15, 2004
PURPOSE: To determine survival and relapse rates by T and N stage and treatment method in five randomized phase III North American rectal adjuvant studies. PATIENTS AND METHODS: Data were pooled from 3,791 eligible patients enrolled onto North Central Canc ...
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Journal ArticleInt J Radiat Oncol Biol Phys · April 1, 2004
PURPOSE: The treatment of moving targets with intensity-modulated radiotherapy may introduce errors in dose delivery. The motion of tumors in the abdomen was studied using quantitative fluoroscopic analysis, and the effect on dose delivery to the target wa ...
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Journal ArticleJ Clin Oncol · February 15, 2004
PURPOSE: To study the relationship between body mass index (BMI) and rates of sphincter-preserving operations, overall survival, cancer recurrence, and treatment-related toxicities in patients with rectal cancer. PATIENTS AND METHODS: We evaluated a nested ...
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Journal ArticleNat Med · February 2004
The effects of vascular endothelial growth factor (VEGF) blockade on the vascular biology of human tumors are not known. Here we show here that a single infusion of the VEGF-specific antibody bevacizumab decreases tumor perfusion, vascular volume, microvas ...
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Journal ArticleJ Clin Oncol · January 1, 2004
PURPOSE: Prior studies have demonstrated superior outcomes after a curative surgical resection of rectal cancer at hospitals where the volume of such surgeries is high. However, because these studies often lack detailed information on tumor and treatment c ...
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Journal ArticleOncology (Williston Park) · December 2003
Cancer of the pancreas remains a formidable challenge in oncology. This malignancy ranks as the fourth leading cause of cancer death in the United States in 2003, with an estimated 30,700 new cases to be diagnosed and 30,000 deaths. Although gains have bee ...
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Journal ArticleSurg Oncol Clin N Am · October 2003
Women with locally advanced primary or recurrent gynecologic malignancies have a poor prognosis. The doses of external radiation necessary to treat gross or microscopic recurrent disease in patients previously irradiated exceed the doses tolerated by norma ...
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Journal ArticleSurg Oncol Clin N Am · October 2003
IORT has been a widely used modality since the 1980s. The initial euphoria experienced at the beginning, however, has subsided, with the result that most centers still practicing IORT are academic institutions. The reason for the reduction in IORT performe ...
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Journal ArticleSemin Radiat Oncol · October 2003
Over the past 25 years, important advances have been made in the management of patients with resectable rectal cancer. Clinical studies have shown the efficacy of combined chemoradiation therapy in enhancing resectability and sphincter preservation rates, ...
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Journal ArticleExpert Rev Anticancer Ther · August 2003
Significant advances have been made in the use of adjuvant radiation for patients with localized rectal cancer. Recent progress in adjuvant postoperative radiation regimens relates to the integration of systemic therapy into radiation, as well as redefinin ...
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Journal ArticleSemin Oncol · August 2003
Combined modality therapy (CMT) with radiation therapy and chemotherapy plays an important role in the management of rectal cancer. Postoperatively, pelvic irradiation and 5-fluorouracil-based chemotherapy have been used to improve local control and surviv ...
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Journal ArticleInt J Radiat Oncol Biol Phys · July 15, 2003
PURPOSE: A Patterns of Care Study (PCS) was conducted to evaluate the standards of practice for patients receiving radiation therapy for esophageal cancer from 1996 to 1999. This study examined the evaluation and treatment schemes used during this time and ...
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Journal ArticleInt J Radiat Oncol Biol Phys · 2003
To summarize the clinical research activities of the Radiation Therapy Oncology Group program in the treatment of patients with locally advanced, as well as resected, pancreatic cancer. Phase II and III clinical trials are underway, examining novel cytotox ...
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Journal ArticleSemin Radiat Oncol · April 2002
Radiation therapy has been used in the treatment of patients with gastric cancer in two clinical settings: definitive therapy for locally advanced, unresectable tumors and adjuvant therapy following surgery for high-risk disease. For patients with locally ...
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Journal ArticleHematol Oncol Clin North Am · February 2002
Pancreatic cancer is one of the deadliest malignancies and is fatal in more than 95% of affected individuals. For locally advanced disease, the combination of 5-FU and radiation appears to offer the best chance for delaying disease progression. The introdu ...
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Journal ArticleInt J Radiat Oncol Biol Phys · February 1, 2002
Radiation therapy has recently emerged as a pivotal modality in the management of completely resected, high-risk gastric cancer. The recently published results of the Intergroup 0116 Gastric Surgical Adjuvant Trial randomized high-risk (T3,4 and/or node po ...
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Journal ArticleSeminars in Colon and Rectal Surgery · December 1, 2001
The treatment of distal rectal cancer is in evolution. Although abdominoperineal resection has been long regarded as the definitive treatment of distal rectal cancer, it is associated with significant morbidity loss of anorectal function with a permanent c ...
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Journal ArticleSeminars in Colon and Rectal Surgery · December 1, 2001
Although the benefit of adjuvant chemotherapy in high-risk carcinoma of the colon after surgical resection has been shown through randomized trials, the role of external beam radiotherapy is uncertain. Historic studies on patterns and predictors of failure ...
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Journal ArticleInt J Clin Oncol · October 2001
The modern use of intraoperative radiation therapy (IORT) was initiated by the studies of Abe and colleagues at the University of Kyoto. This work stimulated significant laboratory and clinical investigation into the use of IORT throughout Japan, Europe, a ...
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Journal ArticleCurr Opin Oncol · July 2001
Substantial advances have been made in the adjuvant management of patients with resectable rectal cancer. Increasing interest in patient quality of life has promoted the use of radiation therapy to enhance sphincter-preserving surgical approaches as an alt ...
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Journal ArticleInt J Radiat Oncol Biol Phys · May 1, 2001
PURPOSE: Late thrombosis of irradiated vascular segments may be the consequence of endothelial cell (EC) dysfunction after radiation therapy. We investigated the effects of beta ionizing radiation on human EC viability, thymidine uptake, and differentiatio ...
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Journal ArticleHematol Oncol Clin North Am · April 2001
Squamous cell carcinomas of the anal canal and margin are relatively uncommon neoplasms of the distal gastrointestinal tract and surrounding skin. The major risk factors for tumor development have been defined through various epidemiologic studies. Randomi ...
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Journal ArticleRadiother Oncol · January 2001
BACKGROUND AND PURPOSE: To update and summarize the experience at the Massachusetts General Hospital of a treatment program of high-dose preoperative irradiation, surgical re-resection, and intraoperative radiation therapy (IORT) as a salvage treatment for ...
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Journal ArticleCurr Treat Options Oncol · December 2000
Distal rectal cancer poses two challenges to the oncologist: local tumor control and sphincter preservation. The abdominoperineal resection (APR), long considered the standard treatment of tumors with a distal edge located up to 6 cm from the anal verge, p ...
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Journal ArticleOncology (Williston Park) · November 2000
This year, approximately 40% of the 28,300 patients diagnosed with pancreatic carcinoma in the United States will present with locally advanced disease. Radiotherapeutic approaches are often employed, as these patients have unresectable tumors by virtue of ...
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Journal ArticleArch Pathol Lab Med · July 2000
BACKGROUND: Under the auspices of the College of American Pathologists, the current state of knowledge regarding pathologic prognostic factors (factors linked to outcome) and predictive factors (factors predicting response to therapy) in colorectal carcino ...
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Journal ArticleArch Surg · April 2000
HYPOTHESIS: Staging laparoscopy in patients with pancreatic cancer identifies unsuspected metastases, allows treatment selection, and helps predict survival. DESIGN: Inception cohort. SETTING: Tertiary referral center. PATIENTS: A total of 125 consecutive ...
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Journal ArticleInt J Radiat Oncol Biol Phys · March 1, 2000
PURPOSE: Little data exists in the medical literature describing the response of patients with inflammatory bowel disease (IBD) to abdominal and pelvic irradiation. To clarify the use of this modality in this setting, this study assesses the short- and lon ...
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Journal ArticleJ Clin Oncol · February 2000
PURPOSE: A Patterns of Care Study examined the records of patients with esophageal cancer (EC) treated with radiation in 1992 through 1994 to determine the national practice processes of care and outcomes and to compare the results with those of clinical t ...
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Journal ArticleAm J Respir Cell Mol Biol · July 1999
In previous studies, we demonstrated that pulmonary neuroendocrine cell (PNEC) hyperplasia in hamsters treated with diethylnitrosamine (DEN) plus 65% hyperoxia (DEN/O2) reflects predominantly neuroendocrine cell differentiation. Several peptides implicated ...
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Journal ArticleAnn Surg · July 1999
OBJECTIVE: The long-term outcomes of patients undergoing local excision with or without pelvic irradiation were examined to define the role of adjuvant irradiation after local excision of T1 and T2 rectal cancers. METHODS: Ninety-nine patients with T1 or T ...
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Journal ArticleCancer · June 15, 1999
BACKGROUND: For the first time, a Patterns of Care Study (PCS) was conducted in 1992-1994 to determine the national practice standards in evaluating and treating patients with esophageal carcinoma and to determine the degree to which clinical trials have b ...
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Journal ArticleDis Colon Rectum · February 1999
PURPOSE: To further define the indications for postoperative pelvic irradiation and chemotherapy, an analysis of the influence of extent of tumor invasion into perirectal fat, lymphatic or venous vessel invasion, and tumor grade on the clinical course of p ...
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Journal ArticleCancer J Sci Am · 1999
PURPOSE: This study analyzes the long-term outcome of patients with stage T4 colon cancer who receive postoperative irradiation. The purpose of the study is to define the potential role of this modality with current systemic therapies. PATIENTS AND METHODS ...
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Journal ArticleFront Biosci · November 15, 1998
Intraoperative electron beam radiation therapy (IOERT) is a technique in which a single high fraction radiation treatment is administered at the time of surgery. Using IOERT, the total radiation dose delivered to a tumor can be increased since sensitive no ...
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Journal ArticleAnn Surg · August 1998
OBJECTIVE: To analyze the effects of 5-fluorouracil (5-FU) chemotherapy combined with preoperative irradiation and the role of intraoperative electron beam irradiation (IOERT) on the outcome of patients with primary locally advanced rectal or rectosigmoid ...
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Journal ArticleJ Clin Oncol · July 1998
PURPOSE: To determine the US national practice standards for patients with adenocarcinoma of the rectum treated in radiation oncology facilities. MATERIALS AND METHODS: A national survey of 57 institutions identified 507 eligible patients who received radi ...
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Journal ArticleAm J Respir Cell Mol Biol · April 1998
Previously, we identified macrophage-stimulating protein (MSP) as being expressed during hamster lung injury induced by nitrosamine carcinogens. Transient, generalized epithelial-cell hyperplasia during the preneoplastic period, and eventually nonneuroendo ...
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Journal ArticleArch Surg · April 1998
OBJECTIVE: To assess the implications of positive cytology for malignant cells (positive results) from peritoneal washings in the management of patients with pancreatic cancer. DESIGN: Retrospective cohort study. SETTING: Referral practice in a university ...
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Journal ArticleInt J Radiat Oncol Biol Phys · April 1, 1998
PURPOSE: The Patterns of Care Rectal Cancer Committee was formed to develop consensus recommendations for patients with adenocarcinoma of the rectum limited to the pelvis. METHODS AND MATERIALS: The Committee was composed of a multidisciplinary group of on ...
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Journal ArticleRadiat Med · 1998
PURPOSE: The Patterns of Care Study (PCS) of the American College of Radiology periodically develops a decision tree and current management guidelines for major malignancies where radiation has an important role. The decision tree is a framework which depi ...
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Journal ArticleDis Colon Rectum · January 1998
PURPOSE: This study examines the effect of 5-fluorouracil administration during preoperative irradiation on rectal cancer tumor proliferation. PATIENTS AND METHODS: One hundred and fifty-three patients with locally advanced rectal cancer received 45 to 50 ...
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Journal ArticleSemin Radiat Oncol · January 1998
The management of distal rectal cancer is in evolution. Although abdominoperineal resection has been long regarded as the definitive treatment of distal rectal cancer, it is associated with significant morbidity--loss of anorectal function with a permanent ...
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Journal ArticleSemin Oncol · December 1997
Intraoperative radiation therapy (IORT) in its broadest sense refers to the delivery of irradiation at the time of an operation. This article will discusses the rationale for and results of both intraoperative electron radiation therapy and intraoperative ...
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Journal ArticleInt J Radiat Oncol Biol Phys · October 1, 1997
PURPOSE: To analyze the impact of patient and treatment parameters in concurrent chemoradiation treatment for anal carcinoma. METHODS AND MATERIALS: Retrospective review of 50 MO anal cancer patients treated from 1984-1994. Most patients received concurren ...
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Journal ArticleJ Surg Oncol · September 1997
BACKGROUND AND OBJECTIVES: Primary adenocarcinoma of the appendix is rare, which makes an understanding of its natural history difficult. To date, it is treated predominantly with surgery alone. This review aims to elucidate the patterns of failure and tre ...
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Journal ArticleJ Clin Invest · June 15, 1997
Transient pulmonary neuroendocrine cell hyperplasia and non-neuroendocrine lung tumors develop in nitrosaminetreated hamsters, which we hypothesized might modulate epithelial cell phenotype by expressing gene(s) homologous to human chromosome 3p gene(s) de ...
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Journal ArticleCancer · March 15, 1997
BACKGROUND: Treatment-associated second neoplasms have emerged as a major threat to the continued survival of patients cured of Hodgkin's disease. In this study, the authors investigated the risk of breast carcinoma in an irradiated Hodgkin's disease popul ...
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Journal ArticleSeminars in Radiation Oncology · January 1, 1997
Since the original report of improved survival of patients with locally unresectable gastric cancer treated with irradiation and 5-fluorouracil (5- FU) in 1968, there has been extensive investigation of this treatment combination in a variety of gastrointe ...
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Journal ArticleAm J Surg · October 1996
PURPOSE: This study examines the changes of serum levels of CA 19-9 in patients with pancreatic cancer following neoadjuvant irradiation and chemotherapy to define the potential role of this tumor marker in preoperative management of these patients. MATERI ...
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Journal ArticleCurr Opin Oncol · July 1996
For the past 10 to 15 years, radiation therapy and chemotherapy have played an increasingly important role in the treatment of various gastrointestinal malignancies, most prominently in anal and rectal cancer. Critical issues in the care of patients with a ...
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Journal ArticleJ Surg Oncol · October 1995
Recurrent rectal or rectosigmoid cancer is a difficult therapeutic problem. A treatment program of external beam irradiation, surgery, and intraoperative irradiation has been used for 41 patients. The 5-year actuarial local control and disease-free surviva ...
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Journal ArticleAm J Pathol · September 1995
Lung tumors induced by 4-(methylnitrosamine)-1-(3-pyridyl)-1-butanone (NNK) with or without hyperoxia have frequent K-ras mutations but only rare p53 mutations, suggesting that this may be a model for non-small cell lung cancers. The goals of the present s ...
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Journal ArticleJ Clin Oncol · June 1995
PURPOSE: This study examines the effect of preoperative irradiation on tumor proliferation in rectal cancer. PATIENTS AND METHODS: One hundred twenty-two patients with locally advanced rectal cancer received 45 to 50 Gy of preoperative irradiation followed ...
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Journal ArticleInt J Radiat Oncol Biol Phys · April 30, 1995
PURPOSE: Regression of rectal carcinoma after preoperative irradiation is variable, likely reflecting differences in the physical and biologic properties of these tumors. This study examines the association between the pathologic response of rectal cancer ...
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Journal ArticleLab Invest · June 1994
BACKGROUND: Intense pulmonary neuroendocrine cell (PNEC) hyperplasia occurs during preneoplastic lung injury in hamsters treated with diethylnitrosamine (DEN) plus hyperoxia. Alterations in oncogene and tumor suppressor gene expression during this process ...
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Journal ArticleJ Urol · June 1994
To determine the effect of prostatic irradiation on the production of prostate specific antigen (PSA), serum PSA levels were measured in 36 men who received pelvic irradiation (45 to 65 Gy.) for nonprostatic malignancies, and compared with those of a contr ...
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Journal ArticleCancer · June 1, 1994
BACKGROUND: This study reviews the experience of patients with early stage rectal cancer managed by local excision or abdominoperineal resection to clarify the relative indications and results of these two approaches. METHODS: From 1962 to 1991, 125 patien ...
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Journal ArticleJ Clin Oncol · April 1994
PURPOSE: This study examines the association between the pathologic response of rectal cancer after irradiation and its pretreatment proliferative state as assayed by proliferating cell nuclear antigen (PCNA) and mitotic activity. PATIENTS AND METHODS: Nin ...
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Journal ArticleJ Urol · March 1994
We studied 161 prostate cancer patients treated by radical irradiation alone without endocrine therapy in whom pretreatment and posttreatment prostate specific antigen (PSA) values were measured, and who had a minimum followup of 2 years. Outcome was analy ...
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Journal ArticleRadiation Oncology Investigations · January 1, 1994
A dose‐response analysis was undertaken in a group of patients with clinically node‐negative carcinoma of the anal canal treated with a sphincter‐sparing approach. Twenty‐three patients underwent biopsy of the primary tumor, followed by concurrent radiatio ...
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Journal ArticleInt J Radiat Oncol Biol Phys · June 15, 1993
PURPOSE: Dose escalation for prostate cancer by external beam irradiation is feasible by a 160 MeV perineal proton beam that reduces the volume of rectum irradiated. We correlated the total doses received to portions of the anterior rectum to study the pos ...
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Journal ArticleJ Clin Oncol · June 1993
PURPOSE: This study examines the experience of patients treated with postoperative radiation therapy after resection of high-risk colon carcinoma in an effort to assess the potential role of this modality in combination with current systemic therapies. PAT ...
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Journal ArticleJ Surg Oncol · May 1993
The Radiation Therapy Oncology Group (RTOG) initiated a phase I/II study of intraoperative radiotherapy (IORT) in advanced or recurrent rectal cancer to assess therapeutic efficacy, toxicity, and establish quality control guidelines prior to beginning a ph ...
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Journal ArticleAnn Surg · February 1993
A retrospective review of the pathology and clinical course of 72 patients undergoing resection of carcinoma of the head of the pancreas was undertaken to identify the frequency of tumor involvement at standard surgical transection margins (stomach, duoden ...
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Journal ArticleCancer · February 1, 1993
Radical treatment for prostate cancer aims at complete eradication of tumor. This review of published data makes clear that the goal is less frequently achieved than commonly presumed. Following radical prostatectomy extracapsular disease, carrying a signi ...
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Journal ArticleSurg Gynecol Obstet · January 1993
The clinical courses of 41 patients with ampullary carcinoma were retrospectively reviewed to determine patterns of failure after resection. The five year actuarial local control and overall survival rates of 29 patients undergoing only pancreaticoduodenec ...
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Journal ArticleAm J Clin Oncol · October 1992
From October 1975 to August 1988, 261 patients at high risk for local recurrence after curative resection of rectal carcinoma underwent high-dose postoperative irradiation. Patients received 45 Gy by a 4-field box usually followed by a boost to 50.4 Gy or ...
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Journal ArticleClin Orthop Relat Res · July 1992
Fifteen consecutive total hip arthroplasties (THAs) in 14 patients considered at risk for developing significant heterotopic ossification (HO) were treated postoperatively with 7.5 Gy of external beam radiation in three fractions. Eight hips in eight of th ...
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Journal ArticleCancer Research · May 1, 1992
Pulmonary neuroendocrine cell (PNEC) hyperplasia is associated with chronic lung diseases in humans, where it is thought to play a role in reparative responses to lung injury. To investigate the kinetics of strongly induced PNEC hyperplasia in an animal mo ...
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Journal ArticleCancer · April 1, 1992
The clinical courses of 64 patients undergoing abdominoperineal resection for Stage I lower rectal carcinoma (tumors confined to the muscularis propria without lymph node involvement) were reviewed to identify subsets at risk for failure. Twelve of 12 pati ...
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Journal ArticleInt J Radiat Oncol Biol Phys · 1992
To assess the usefulness of proton beams for treatment of patients with rectal cancer, we have performed comparative 3D treatment planning for proton beam and x-ray beam therapy. Three common x-ray techniques (AP-PA, 3-field, and 4-field box), a proton bea ...
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Journal ArticleInt J Radiat Oncol Biol Phys · November 1991
Radiation response of a spontaneous mouse fibrosarcoma, FSa-II, to various fractionated doses was studied in vivo together with single dose cell survival curves. Early generation isotransplants were used. Animals were C3Hf/Sed mice derived from our defined ...
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Journal ArticleCancer · July 15, 1991
From December 1981 to December 1989, 20 patients with primary or recurrent retroperitoneal sarcoma received 4000 to 5000 cGy of external beam radiation therapy (EBRT) in conjunction with surgical resection and intraoperative radiation therapy (IORT). Seven ...
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Journal ArticleRadiother Oncol · June 1991
Twenty-eight patients with resectable but tethered rectal carcinomas were treated with preoperative irradiation (EBRT) and surgical resection. The 5-year actuarial disease-free survival and local control rates of these 28 patients were 66 and 76%, respecti ...
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Journal ArticleJ Clin Oncol · May 1991
To improve local control and survival in patients with primary locally advanced rectal and rectosigmoid carcinoma, intraoperative electron beam radiation therapy (IORT) has been used with a combination of moderate- to high-dose preoperative radiation thera ...
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Journal ArticleCancer · March 15, 1991
A multimodality approach of moderate-dose to high-dose preoperative radiation therapy, surgical resection, and intraoperative electron beam radiation therapy (IORT) has been used for patients with locally recurrent rectal or rectosigmoid carcinoma. The 5-y ...
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Journal ArticleClin Orthop Relat Res · August 1990
Sixteen patients (18 hips) were treated with localized radiation therapy limited to periarticular regions surrounding the femoral neck by shielding the prosthesis and the adjacent regions to prevent heterotopic bone formation around the uncemented prosthes ...
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Journal ArticleRadiother Oncol · January 1990
Protons have a finite range in tissue and can provide a better concentration of radiation dose in the tumor than conventional X-rays in certain situations. The development of optimized treatment plans for X-rays and protons followed by a comparative evalua ...
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Journal ArticleJ Clin Oncol · August 1989
The clinical course of 40 patients undergoing conservative surgical excision and 26 patients undergoing local excision and postoperative radiation therapy of rectal carcinoma was reviewed. Surgical procedures were transanal excision (55 patients), Kraske p ...
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Journal ArticleOncology (Williston Park) · July 1989
Although the value of postoperative radiotherapy has been demonstrated for subsets of patients with rectal carcinoma, the efficacy of postoperative radiation therapy for colonic carcinoma (above the peritoneal reflection) is much less clear. Recent studies ...
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Journal ArticleCancer Res · June 15, 1989
Transfection of the activated ras oncogene (Ha-ras) into second passage rat embryo fibroblasts can induce the metastatic phenotype, while cotransfection of Ha-ras with the adenovirus type 2 E1a gene (Ad2-E1a) yields cells which are tumorigenic but nonmetas ...
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Journal ArticleProc Natl Acad Sci U S A · June 1989
The major histocompatibility complex (MHC) class I molecules are known to serve as recognition elements for cytotoxic T cells in mediating the rejection of transplanted tumors. We demonstrate that MHC molecules may have nonimmune functions in modulating tu ...
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Journal ArticleCancer · November 1, 1988
Thirty adults with large cell lymphoma predominantly localized to the mediastinum diagnosed at the Massachusetts General Hospital between 1976 and 1985 were identified. The median age of the 20 females and 10 males was 34 years. All but one presented with ...
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Journal ArticleProc Natl Acad Sci U S A · November 1988
Many human tumors, particularly those of epithelial origin, appear to express greatly reduced levels of major histocompatibility complex class I antigens on their surface. It has been previously reported that the class I gene H-2Ld, introduced into adenovi ...
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Journal ArticleRadiat Res · August 1988
The effects of pentobarbital anesthesia on the energy metabolism of FSaII and MCaIV foot tumors in mice were studied by 31P MRS. Using an 8.5 T spectrometer, in vivo spectra were obtained in 15 animals before and after pentobarbital anesthesia (0.05 mg/g i ...
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Journal ArticleRadiother Oncol · July 1988
From 1981 to 1986, 12 patients with Stage I and II diffuse large cell lymphoma of the mediastinum were treated with 4 or more cycles of multiagent chemotherapy and for nine patients this was followed by mediastinal irradiation. The response to treatment wa ...
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Journal ArticleJ Clin Oncol · May 1988
From 1979 to 1986, the response to treatment of 53 patients with stage IA to IIB mediastinal Hodgkin's disease was evaluated by three-dimensional volumetric analysis using thoracic computed tomographic (CT) scans. The mean initial volume of mediastinal dis ...
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Journal ArticleAnn Surg · December 1987
One hundred thirty-three patients with Stage B2, B3, and C colonic carcinoma had resection for curative intent followed by adjuvant postoperative radiotherapy to the tumor bed. The 5-year actuarial local control and disease-free survival rates for these 13 ...
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Journal ArticleAm J Clin Oncol · December 1987
The effect of 100% inspired oxygen on in vivo tumor metabolism was examined using phosphorus-31 (31P) NMR spectroscopy. Isotransplants of two murine tumor histologies, designated MCaIV (C3H mammary adenocarcinoma) and FSaII (C3H fibrosarcoma), were used in ...
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Journal ArticleCancer · October 1, 1987
Twenty-seven patients with soft tissue sarcoma had preoperative radiotherapy, limb-sparing marginal surgical resection and whole-mount tumor histologic analysis. Incisional biopsy specimens before radiotherapy were reviewed for tumor type, grade, and exten ...
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Journal ArticleCancer · September 15, 1987
Changes in mediastinal and lung dimensions during respiration were studied to assess the potential of radiotherapy gated to respiration to minimize normal tissue irradiation. Twelve patients with mediastinal Hodgkin's disease were assessed using chest radi ...
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Journal ArticleInt J Radiat Oncol Biol Phys · September 1987
The effect of hypo to hyperthermic temperatures on tumor blood flow and hypoxic cell fractions was studied in a murine fibrosarcoma transplanted in the hind leg of anesthetized mice. The blood flow to the tumor was assessed by the determination of the upta ...
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Journal ArticleCancer · March 15, 1987
This study analyzed the 5 year actuarial survival and disease-free survival of 122 patients with Stage IA and IIA Hodgkin's disease, (108 patients laparotomy staged) treated with mantle and paraaortic irradiation from 1975 to 1981. Prognostic subgroups and ...
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Journal ArticleCancer · January 1, 1987
From 1975 to 1981, 38 patients with Stage 3A Hodgkin's disease (35 patients pathologically staged) underwent mantle and para-aortic irradiation, and in 36 patients this was preceded or followed by at least six cycles of multiagent chemotherapy. Both the 5- ...
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Journal ArticleInt J Radiat Oncol Biol Phys · September 1986
A retrospective review of all patients undergoing radiotherapy for carcinoma of the colon, pancreas, stomach, small bowel and bile ducts, lymphomas of the stomach, and other GI sites and retroperitoneal sarcomas was completed to assess the effects of secon ...
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Journal ArticleJ Clin Oncol · March 1985
Carcinoma of the colon complicated by obstruction or perforation has been recognized as having a poorer prognosis than tumors without obstruction or perforation. To clarify the natural history, failure patterns, and implications for adjuvant treatment afte ...
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Journal ArticleAnn Surg · December 1984
To identify patterns of failure following curative resection of colonic (nonrectal) carcinoma, the medical records of 533 patients undergoing resection with curative intent were reviewed. The overall local failure rate was 19% (102/533 patients) with 32 pa ...
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Journal ArticleInt J Radiat Oncol Biol Phys · May 1984
A retrospective review of the medical records of 533 patients undergoing resection with curative intent of large bowel above the peritoneal reflection was undertaken to identify subsets of patients at high risk for local failure. The overall local failure ...
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Journal ArticleAnn Surg · December 1983
In a series of 531 CENDX, preoperative cardiac risk was categorized by clinical criteria. Patients with CAD (history of previous MI, angina, congestive heart failure, and/or electrocardiographic evidence of CAD were selected for more invasive studies based ...
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Journal ArticleInt J Radiat Oncol Biol Phys · August 1982
From 1968 to January 1, 1977, 44 patients with initially unresectable colorectal carcinoma were treated with preoperative radiotherapy and surgery. On presentation, unresectability was determined either clinically (26 patients) or by preradiotherapy laparo ...
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