Gastric leiomyosarcoma mimicking a cystic tumor at the pancreatic tail - One case report

A 73 year-old female patient suffered from anemia and a palpable abdominal mass. Abdominal ultrasonography and magnetic resonance imaging revealed a l esion with papillary excrescences at the pancreatic tail. Endoscopic retrog rade cholangiopancreatography showed a normal pancreatic duct, but a small submucosal tumor was found in the stomach incidentally. Laparotomy disclose d an exophytic tumor arising from the submucosal layer of the stomach. Path ology revealed a gastric leiomyosarcoma with remarkable liquefaction and cy stic change. Gastric leiomyosarcoma can be so necrotic as to be mistaken fo r a cystic tumor. It is critically important to differentiate the peripancr eatic cystic lesion because the treatment strategy is totally different.