A case of juvenile polyp associated with ulcerative colitis

A 19-year-old woman visited to common doctor complainting of low grade fever of the first half of between 37 to 38℃ and bloody stool. As continuing bloody stool ten times per day after taking antibiotics and medicine for intestinal disorders, she was referred to our hospital. Colonoscopy revealed ulcerative colitis on all colon type, and a subpedunclated polyp about 6mm of ascending colon, histopathological findings showed hyperplastic polyp. The symptoms has improved her by administering mesalazine 3000mg per day, attending our hospital regularly for a while. After one year, colonoscopy revealed a pedunclated polyp enlarged about 15mm of ascending colon, so EMR was done. The polyp was 15×14mm in diameter, subpedunclated type with superficial redness and erosion. Magnifyied endoscopy with crystal-violet staining showed I and II pit patterns with wide interstitial tissue, not showed neoplastic pit patterns on IV and Vpit patterns. Histopathological findings showed the polyp with superficial redness and erosions, was made for severe inflammatory cells infiltration and expanded cystic glands. So we diagnosisd juvenile polyp, and ulcerative colitis was in remission.