[A case of leiomyosarcoma of the inferior vena cava].

Primary leiomyosarcoma of the inferior vena cava is rare and fatal. A 15-year-old female was admitted with the diagnosis of the right atrial myxoma associated with the Budd-Chiari syndrome. The tumor of the IVC was unresectable, although the right atrial tumor extended from the IVC was extirpated. Pathological examination of the tumor revealed a leiomyosarcoma. She was hemodynamically improved immediately after the operation. But she was expired due to the hepatic failure 9 days postoperatively. No autopsy was obtained. The literature regarding with leiomyosarcoma of the IVC was briefly reviewed.