Gastric leiomyosarcoma is a rare tumor in pediatric patients. The hist
ological differentiation between leiomyoma and leiomyosarcoma is diffi
cult. Computed tomography may allow the presumptive diagnosis of leiom
yosarcoma to be made preoperatively and the surgical treatment can be
planned in advance. We report a case of gastric leiomoysarcoma in a 2-
year old boy. Ultrasonography and computed tomography demonstrated an
inhomogeneous mass with areas of tumor necrosis and calcifications in
the left upper quadrant.