Upper gastrointestinal hemorrhage preceding development of Bouveret's syndrome.

Gastric outlet obstruction by a gallstone is a very uncommon clinical entity; it was first reported by Bouveret in 1896. In the patient presented, we were able to show the development of formation of the bilioenteric fistula with massive arterial bleeding from the eroded cystic artery until duodenal occlusion. The process was endoscopically and radiologically observed and documented. Although the diagnosis was made immediately, the patient had to undergo surgery because the gallstone proved to be too large to be extracted endoscopically.