Rare cause of duodenal obstruction: Bouveret syndrome.

Gallstone ileus is a relatively rare pathology, most commonly obstructing the terminal ileum. Bouveret syndrome is a syndrome found particularly in elderly patients, which develops as the result of a cholecystoenteric fistula. It leads to the gastric outlet obstruction and has an incidence of less than 1%. In this report, we presented a 95-year-old patient diagnosed with Bouveret syndrome.