title: Massive rectal bleeding in Crohn's colitis.
mesh_terms: D000368:Aged; D003106:Colon / Q000473:pathology; D003424:Crohn Disease / Q000150:complications* / Q000473:pathology; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D006801:Humans; D012007:Rectum