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'Watch and Wait' Feasible for Some Rectal Cancer Patients

TUESDAY, Nov. 3, 2020 -- A "watch-and-wait" (WW) strategy may be an option for carefully selected patients who achieve a complete response (CR) to neoadjuvant chemoradiation (nCRT) for rectal adenocarcinoma, according to a study published online Oct. 26 in the Journal of the American College of Surgeons.

Bryce W. Beard, M.D., from the Kaiser Permanente Bernard J. Tyson School of Medicine in Pasadena, California, and colleagues reviewed the medical records of patients treated with nCRT for nonmetastatic rectal cancer and compared outcomes for patients with CR to nCRT with and without surgery. The analysis included 465 patients who completed nCRT from January 2015 through February 2019.

The researchers report that 406 patients had a response assessment, of whom 23 percent had complete endoscopic response. Of these 95 patients, 53 underwent WW and 42 had surgery. During a median follow-up of 35 months, the three-year freedom from local regrowth was 85 percent in the WW group. Three-year overall survival was 100 versus 88 percent in the surgical versus WW group, while rectal cancer-specific survival was 100 versus 95 percent; freedom from non-regrowth recurrence was 92 versus 85 percent. In the six WW patients with local regrowth, five (83 percent) eventually developed distant recurrence.

"Careful evaluation to confirm clinical CR after nCRT is valuable in selecting patients for WW," the authors write.

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Posted: November 2020

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