De novo carcinoma of the rectum: a case report.
There is strong evidence in the literature to suggest that most of the colorectal carcinomas arise from adenomatous polyps. Yet, rare carcinomas may arise de novo and we are reporting such a case of intramucosal rectal carcinoma occurring in a 47-year-old healthy man.
D000230:Adenocarcinoma / Q000209:etiology* / Q000473:pathology; D001706:Biopsy; D006801:Humans; D007413:Intestinal Mucosa / Q000473:pathology; D008297:Male; D008875:Middle Aged; D012004:Rectal Neoplasms / Q000209:etiology* / Q000473:pathology; D012812:Sigmoidoscopy