When to operate in regional enteritis.
D000006:Abdomen, Acute / Q000209:etiology; D002908:Chronic Disease; D003424:Crohn Disease / Q000150:complications / Q000601:surgery*; D006801:Humans; D007412:Intestinal Fistula / Q000209:etiology; D007415:Intestinal Obstruction / Q000209:etiology; D011300:Preoperative Care; D014517:Ureteral Obstruction / Q000209:etiology