Which is the part of ileum where gallstone is most likely to get imapcted in gallstone ileus.? ileocecal junction or elsewhere..?plz tell

A gallstone ileus: Implies pathologic communication of the gallbaldder with the bowel which can be large or small bowel most common is the duodenum, then hepatic flexure of the large bowel. The inflammation/infection causes the ileus 95% of the time. 5% are asymptomatic cholecystoenteric fistulas and impaction may or may not occur depending on the size of the stone.