Abstract
Leiomyosarcoma of the inferior vena cava (IVC) is extremely rare. In the case reported here, a 61-year-old woman visited a local hospital because of an abdominal mass. The abdominal computed tomography (CT) scan showed a 15-cm solid, lobulated retroperitoneal mass with a necrotic area and total complete obstruction of the infrarenal IVC. A retroperitoneal tumor was suspected. A complete tumor resection with IVC resection was performed. The tumor was histologically composed of spindle cells that showed nuclear pleomorphism with occasional giant nuclei. The patient was diagnosed as having a leiomyosarcoma of the IVC. Seventeen months later, an abdominal CT scan showed liver metastasis, and the patient underwent a partial hepatectomy. Twenty-nine months after the initial operation, however, multiple lung and liver metastases occurred. To our knowledge, only five cases of radically resected metastasis of leiomyosarcoma of the IVC have been reported in our country. Because of its rare occurrence, we report our case here and discuss some references.
