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Theodore Neofytos Tsangaris

Medical Associate Professor in the Department of Surgery
Surgical Oncology

Current Appointments & Affiliations


Medical Associate Professor in the Department of Surgery · 2025 - Present Surgical Oncology, Surgery

Recent Publications


Does Preoperative MRI Reduce Positive Margins after Breast-Conserving Surgery?

Journal Article Ann Surg Oncol · October 2023 BACKGROUND: Breast-conserving surgery (BCS) is a mainstay for breast cancer management, and obtaining negative margins is critical. Some have advocated for the use of preoperative magnetic resonance imaging (MRI) in reducing positive margins after BCS. We ... Full text Link to item Cite

Resection of Cavity Shave Margins in Stage 0-III Breast Cancer Patients Undergoing Breast Conserving Surgery: A Prospective Multicenter Randomized Controlled Trial.

Journal Article Ann Surg · May 1, 2021 OBJECTIVE: Single-center studies have demonstrated that resection of cavity shave margins (CSM) halves the rate of positive margins and re-excision in breast cancer patients undergoing partial mastectomy (PM). We sought to determine if these findings were ... Full text Link to item Cite

Impact of Cavity Shave Margins on Margin Status in Patients with Pure Ductal Carcinoma In Situ.

Journal Article J Am Coll Surg · April 2021 BACKGROUND: We examined the impact of cavity shave margins (CSMs) on margin status in patients with pure ductal carcinoma in situ (DCIS) undergoing partial mastectomy (PM). METHODS: One hundred and nine patients from 2 multicenter, randomized controlled tr ... Full text Link to item Cite
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Education, Training & Certifications


The George Washington University, School of Medicine and Health Sciences · 1983 M.D.