A case of type 2 advanced gastric cancer which prolapsed into the duodenal bulb

A 65-year-old woman was going to hospital regularly by rheumatoid arthritis. She was reffered for upper gastrointestinal endoscopy (GIE) because of the anemia. First GIE showed a deformity and erosion on the pyloric ring, and pathlogical examination was suspicion of adenocarcinoma as a result of the biopsy. So after one month, she underwent 2nd GIE. 2nd GIE showed 2type tumor by the retroflexion method into the duodenal bulb and the biopsy indicated adenocarcinoma. At first we diagnosed duodenal cancer, but the lesion was finally shown to be gastric cancer that had prolapsed into the duodenal bulb by distal gastrectomy. Result of pathological examination were as follows : moderately differentiated tubular adenocarcinoma, T2 (MP) , 1y1,v0,n (+) . We reported a case of advanced gastric cancer prolapsed into the duodenal bulb. So we reviewed about our experience from the literature.