[Bouveret syndrome--a rare form of pyloric obstruction].

Gallstone ileus represents a severe complication of cholelithiasis. The incidence of serious disease concomitant with gallstone ileus is high; it is most often seen in elderly patients and contributes to its high morbidity and mortality rates. Bouveret's syndrome is a rare form of gallstone ileus, characterized by its duodenal site after migration through a cholecysto-duodenal fistula in almost all cases. We report on a patient with Bouveret's syndrome. The etiology, pathogenesis, diagnosis and therapeutic approach with literature review are presented and discussed.