en Surgery Surgery case report case report Torsion of the gallbladder with gangrene is a rare condition which is generally due to an abnormal anatomical variation of the organ i.e., loss of fixation of the organ to the inferior margin of the liver and the presence of a long meso cyst. The case considered is a seven year old boy who presented with acute abdominal pain. He underwent laparotomy 36 hours after having sustained blunt abdominal trauma. Operation was limited to cholecystectomy and removal of a gangrenous gallbladder which had undergone torsion. The postoperative course was uneventful. gallbladder, diseases, torsion, trauma, cholecystectomy. 191 192 http://mjiri.iums.ac.ir/browse.php?a_code=A-10-298-481&slc_lang=en&sid=1 AKBAR BEHDAD 20031947532846004873 20031947532846004873 Yes From the Department of Surgery, Isfahan University of Medical Sciences, Isfahan, I.R. Iran.