Gastroduodenal intussusception caused by gastric gastrointestinal stromal tumor: A case report and review of the literature.

Background: Gastric gastrointestinal stromal tumor (GIST) is the most common etiology of gastroduodenal intussusception. Although gastroduodenal intussusception caused by gastric GIST is mostly treated by surgical resection, the first case of gastroduodenal intussusception caused by gastric GIST was treated by endoscopic submucosal dissection (ESD) in Japan in 2017.

Case Summary: An 84-year-old woman presented with symptoms of postprandial fullness with nausea and occasional vomiting for a month.