Abstract
A 74-year-old woman treated for chronic renal failure due to anemia was found in gastric endoscopy to have a pedunculated polyp prolapsing into the duodenal bulb. Histopathologically, it was well-differentiated adenocarcinoma, necessitafing distal gastrectomy with D1 lymph node dissection. She was discharged on postoperative day 13 after the operation. This case is presented together with the analysis of 58 reported cases gastric cancer prolapsing into the duodenum from 1982 to 2002.