title: ANAL AND PERINEAL ULCERATION IN CROHN'S DISEASE.
mesh_terms: D000293:Adolescent; D001003:Anal Canal; D003424:Crohn Disease; D004751:Enteritis; D005401:Fissure in Ano; D006801:Humans; D010388:Pelvis; D010502:Perineum; D012883:Skin Ulcer; D013514:Surgical Procedures, Operative; D014456:Ulcer
keywords: ADOLESCENCE; ANUS; ENTERITIS, REGIONAL; FISSURE IN ANO; PERINEUM; SKIN ULCER; SURGERY, OPERATIVE; ULCER