A SUCCESSFULL RESECTION OF LEIOMYOSARCOMA OF INFERIOR VENA CAVA (IVC) IN AN ADULT

A 68-year-old woman was admitted for a diagnostic examination of a liver tumor detected by abdominal ultrasonography during a health screening examination. Abdominal ultrasonography and computed tomography revealed a mass that occupied the retroperitoneal space from above the level of the renal veins to the level of the porta hepatis. Magnetic resonance image showed a tumor thrombus in the IVC that extended into the left renal vein. Venocavography revealed obstruction of the IVC and the left renal vein with developed collateral circulation. The preoperative diagnosis was primary vena cava tumor, and the operation was carried out. The 9.5cm tumor derived from the retroperitoneum which was situated around the IVC from above the right renal vein to the level of the porta hepatis. By amputating the left renal vein and amputating the IVC above the tumor and above the right renal vein, the tumor was resected. Pathological diagnosis of the tumor was leiomyosarcoma of IVC.