A vanishing superficial depressed colorectal lesion in a patient with ulcerative colitis

A 61-year-old woman with a 10-year history of ulcerative colitis (UC) underwent surveillance colonoscopy. She had recently been asymptomatic without medication. Colonoscopy demonstrated a reddened 20-mm area in the lower part of the rectum without any inflammation. Spraying with indigo carmine dye revealed a superficial depressed area with a clear border (A). Magnifying chromoendoscopy with crystal violet revealed sparse pits that were smaller and rounder than normal (B). From these findings, we diagnosed the lesion as a depressed-type tumor.
Source: Gastrointestinal Endoscopy - Category: Gastroenterology Authors: Tags: At the focal point Source Type: research