Gallstone ileus is a rare complication that occurs when gall stone passes into small bowel forming a fistula between gall bladder and duodenum and gets impacted. It is associated with high morbidity and mortality and is usually responsible for about 1%-4% of cases of mechanical intestinal obstruction. The diagnosis can be confirmed by plain X-ray, ultrasound and CT scan demonstrating Rigler’s triad. Surgical treatment involves removal of the impacted stone with immediate or delayed dealing with the fistula.
