title: Small cell carcinoma occurring in a case of ulcerative colitis.
abstract: A 61-year-old man, with an 8-year history of ulcerative colitis, presented with bleeding per rectum for 4 weeks' duration. Colonoscopy revealed polypoidal neoplasm at the rectosigmoid junction. Histopathology depicted small cell carcinoma. On immunohistochemical staining, chromogranin A and synaptophysin were positive. The tumour was diagnosed as undifferentiated small cell carcinoma, which is unusual since generally it is the adenocarcinoma that occurs on a background of ulcerative colitis and there are only three previous reports of small cell carcinoma occurring in UC.
authors.affiliation: Department of Gastroenterology, Century Hospital, Kerala, India. harikumnair@yahoo.co.in
authors.forename: R
authors.initials: R
authors.lastname: Harikumar
authors.forename: Noble
authors.initials: N
authors.lastname: Thomas
authors.forename: Thomas
authors.initials: T
authors.lastname: Mathew