Adenoma recurrences after resection of colorectal carcinoma: results from the Southwest Oncology Group 9041 calcium chemoprevention pilot study.

Journal Article (Clinical Trial;Journal Article)

BACKGROUND: Colorectal adenomas are the usual precursors to carcinoma in sporadic and hereditary colorectal cancers (CRC). METHODS: A total of 220 CRC patients (stages 0, I, and II) were randomized prospectively in a double-blind pilot study of calcium chemoprevention by using recurrent colorectal adenomas as a surrogate end point. This trial is still in progress, and we report the preliminary findings on adenoma recurrence rates. RESULTS: Synchronous adenomas were present in 60% of patients, and cancer confined in a polyp was present in 23% of patients. The overall cumulative adenoma recurrence rate was 31% (19% in the first year, 29% for 2 years, and 35% for 3 years). The recurrence rates were greater for patients with synchronous adenomas: 38% at 3 years (P =.01). Lower stage was associated with higher adenoma recurrence rates (P =.04). Factors including age, sex, site of primary cancer, and whether the cancer was confined to a polyp were not significantly associated with differences in adenoma recurrence rates. CONCLUSIONS: The substantial adenoma recurrence rate in patients resected of CRC justifies colonoscopic surveillance on a periodic basis. Patients with higher rates of adenoma recurrences, such as CRC with synchronous adenomas, are ideal subjects for chemoprevention trials.

Full Text

Duke Authors

Cited Authors

  • Chu, DZJ; Chansky, K; Alberts, DS; Meyskens, FL; Fenoglio-Preiser, CM; Rivkin, SE; Mills, GM; Giguere, JK; Goodman, GE; Abbruzzese, JL; Lippman, SM

Published Date

  • October 1, 2003

Published In

Volume / Issue

  • 10 / 8

Start / End Page

  • 870 - 875

PubMed ID

  • 14527904

International Standard Serial Number (ISSN)

  • 1068-9265

Digital Object Identifier (DOI)

  • 10.1245/aso.2003.03.037


  • eng

Conference Location

  • United States