Abstract
50 year old man with abnormality in medical upper GI examination came to our hospital. 5 cm sized large tumor shaped like "kagamimoti" was found in the anterior wall of the stomach. The upper lesion of the tumor consisted of epitheliogenic mass rode on the lower lesion looked like submucosal tumor. Distal gastrectomy was performed. The tumor was mucinouscarcinoma which invaded to musclaris propria. Well differentiated adenocarcinoma was exposed in central portion of the tumor and massive mucine produced by carcinoma pushed up mucosa from submucosa in the periphery of the tumor.
