However, gallstone ileus is easily missed on plain radiographs, because most gallstones are radiolucent and all 3 elements of the Rigler triad show up in only 15% of cases.2 Although formal guidelines ...

Gallstone ileus is a rare complication of gallstone disease. A small-bowel obstruction results after 1 or more gallstones migrate through a cholecystoenteric fistula.1 Elderly women are more likely ...