[Ulcerative colitis with localized clustered inflammatory polyposis; report of a case].

We reported a case of 21 years old male with ulcerative colitis in whom barium-enema follow-up study demonstrated two localized narrowing areas with clustered inflammatory polyps in the transverse colon although there was no severe attack during the 3-year observation period. In this case, the possibility of malignant changes was considered radiographically, but denied endoscopically and histologically by examining the nature of the polyps.