Pathologic lesions of the anal region associated in Crohn's disease.
D001004:Anus Diseases / Q000473:pathology* / Q000601:surgery; D003108:Colonic Diseases / Q000473:pathology*; D003424:Crohn Disease / Q000150:complications* / Q000175:diagnosis; D006801:Humans; D012002:Rectal Diseases / Q000473:pathology