45 year-old woman who had undergone radiation therapy for colorectal carcinoma, presented with recurrent rectal bleeding.
Colonoscopy revealed a friable, presumably post-irradiation colonic stricture. Biopsies showed no evidence of recurrent neoplasia.
72 year old with hematochezia, chronic right upper quadrant abdominal pain, known diverticulosis and a history of having had colon polyps 4 and 7 years earlier.
Colonoscopy revealed this stricture in the proximal transverse colon which could not be traversed endoscopically. Biopsies were benign, revealing only chronic inflammation.
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