title: Rectal bleeding: when and how to investigate.
mesh_terms: D000328:Adult; D003110:Colonic Neoplasms / Q000150:complications; D003111:Colonic Polyps / Q000150:complications; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis / Q000209:etiology*; D006484:Hemorrhoids / Q000150:complications; D006801:Humans; D008875:Middle Aged; D012002:Rectal Diseases / Q000150:complications* / Q000175:diagnosis; D012004:Rectal Neoplasms / Q000150:complications; D012007:Rectum