<prompt> All are true about gallstone ileus exceptMay be diagnosed with abdominal X-RayMost common fistula is to duodenumTumbling obstructionCholecystectomy should be done In same episode  <response>: Most patients in Gallstone ileus are unstable to withstand a Prolonged operative procedure, so cholecystectomy should not be done in same episode Fistula can be addressed at a second laparotomy Ref: Sabiston 20th edition Pgno :1506-1507 