title: Rectal bleeding in Crohn's disease of colon.
mesh_terms: D000328:Adult; D000368:Aged; D003093:Colitis, Ulcerative / Q000175:diagnosis; D003424:Crohn Disease / Q000150:complications* / Q000175:diagnosis; D003937:Diagnosis, Differential; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D006801:Humans; D008297:Male; D012002:Rectal Diseases / Q000209:etiology*