穿通性胃潰瘍に合併した胃平滑筋肉腫の1例

A Case of Gastric Leiomyosarcoma with a Penetrated Ulcer of the Stomach

　胃平滑筋肉腫は，比較的まれな疾患であるが，筆者らは穿通性胃潰瘍に合併した1例を経験したので報告する．

　A 59-year-old male was admitted to the hospital because of a postprandial distress in the abdomen. Laboratory findings showed no abnormalities except for positive occult blood in his stool. X-ray examinations revealed a deep niche at the gastric angle. Endoscopically, a protruding lesion with even surface was found on the posterior wall in the lower gastric corpus. No fistula, bleeding or bridging fold was observed. The operation was performed under preoperative diagnosis of a penetrated ulcer and a subrnucosal tumor of the stomach. At operation, a penetrated ulcer and a submucosal tumor with the size of 1.0×1.0×1.5cm was found in the lower gastric corpus. The tumor was localized within the muscular coat.

　Histologically, it proved to be a leiomyosarcoma of the stomach.