title: Rectal bleeding.
mesh_terms: D001466:Barium Sulfate; D003093:Colitis, Ulcerative / Q000175:diagnosis; D003106:Colon; D003108:Colonic Diseases / Q000150:complications / Q000175:diagnosis*; D003110:Colonic Neoplasms / Q000175:diagnosis / Q000473:pathology; D004241:Diverticulum, Colon / Q000175:diagnosis; D004724:Endoscopy; D004733:Enema; D005336:Fiber Optic Technology; D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D006391:Hemangioma / Q000175:diagnosis; D006801:Humans; D007417:Intestinal Polyps / Q000175:diagnosis / Q000473:pathology; D012007:Rectum; D012812:Sigmoidoscopy / Q000379:methods
chemical_list: D001466:Barium Sulfate