ABDOMINAL SURGERY.
D003092:Colitis; D003093:Colitis, Ulcerative; D003424:Crohn Disease; D004238:Diverticulitis; D004239:Diverticulitis, Colonic; D004751:Enteritis; D005756:Gastritis; D005767:Gastrointestinal Diseases; D006471:Gastrointestinal Hemorrhage; D005770:Gastrointestinal Neoplasms; D006801:Humans; D007412:Intestinal Fistula; D007415:Intestinal Obstruction; D007416:Intestinal Perforation; D010437:Peptic Ulcer; D012005:Rectal Prolapse; D013514:Surgical Procedures, Operative
COLITIS, ULCERATIVE; DIVERTICULITIS, COLONIC; ENTERITIS, REGIONAL; GASTRITIS; GASTROINTESTINAL DISEASES; GASTROINTESTINAL NEOPLASMS; HEMORRHAGE, GASTROINTESTINAL; INTESTINAL FISTULA; INTESTINAL OBSTRUCTION; INTESTINAL PERFORATION; PEPTIC ULCER; RECTAL PROLAPSE; REVIEW; SURGERY, OPERATIVE