Rectal bleeding.
D000328:Adult; D000792:Angiography; D001803:Blood Transfusion; D002648:Child; D003082:Colectomy; D003108:Colonic Diseases / Q000628:therapy; D004241:Diverticulum, Colon / Q000150:complications; D004724:Endoscopy; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000601:surgery / Q000628:therapy; D006801:Humans; D007422:Intestines / Q000098:blood supply; D010438:Peptic Ulcer Hemorrhage / Q000628:therapy; D012007:Rectum; D012812:Sigmoidoscopy