Abstract
A 77-year-old male was admitted with complaints of a poor appetite. Gastroendoscopic examination showed an abnormal thick fold extending from the gastric upper body to the duodenum. A dark red polyp intussuscepted into the duodenum . Suddenly the intussusception was released, and the polyp was getting over the angulus to the upper part of the stomach during observation. Finally, the long stalk disappeared and the shape of the polyp changed into semipedunculated. When an upper G. I series and operation were performed, only a polypoid lesion without stalk existed in the posterior wall of the gastric upper body . Based on the endoscopic and pathological findings and same cases reported in Japan, it was concluded that this case was so-called complete type intussusception which involved the entire layer of the stomach wall.