Benign ulcers of the colon.
D001706:Biopsy; D003106:Colon / Q000473:pathology; D003108:Colonic Diseases / Q000473:pathology*; D003113:Colonoscopy; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000473:pathology; D006801:Humans; D007413:Intestinal Mucosa / Q000473:pathology; D008875:Middle Aged; D012812:Sigmoidoscopy; D014456:Ulcer / Q000473:pathology