A rare cause of gastric outlet obstruction.

An 89-year-old woman was admitted with complaints of nausea, vomiting, and epigastric pain after having meals. A computed tomography scan of the abdomen showed a 12.5-cm mass in the fundus of the stomach, which extended to the duodenum (Figure 1). Upper gastrointestinal endoscopy showed a polypoid lesion with a thick and long stalk that originated from fundus and extended to the duodenum. The head of the lesion prolapsed through the pylorus into the duodenal bulb and caused gastric outlet obstruction (Figure 2). Turk J Gastroenterol 2017