Crohn's disease of the anal region.
D000293:Adolescent; D000328:Adult; D001004:Anus Diseases / Q000473:pathology*; D002648:Child; D003424:Crohn Disease / Q000473:pathology*; D005260:Female; D005401:Fissure in Ano; D005402:Fistula; D006801:Humans; D007082:Ileum; D008297:Male; D012507:Sarcoidosis / Q000175:diagnosis