A case of giant retroperitoneal liposarcoma with deep vein thrombosis

Abstract

A 60-year-old male who had fallen down on the road was brought into a hospital by ambulance and was diagnosed as having fracture of the femoral neck of the right leg in February 2008. He was then transferred to the department of orthopedic surgery in our hospital. On arrival at our hospital, he had severe abdominal distention and a giant retroperitoneal tumor was suspected from abdominal CT findings. He was admitted to our surgical department for further examination and treatment of the tumor. He was found to have deep vein thrombosis of the left leg and a giant retroperitoneal tumor with the direct invasion into the left kidney. An inferior vena cava filter was placed in March 2008, and then surgery was performed. The abdomen was dominated by the retroperitoneal tumor and the left kidney was also encased within it. The tumor as well as the left kidney needed to be removed. The tumor weight was 14kg. The histopathological diagnosis was dedifferentiated liposarcoma.
A retroperitoneal liposarcoma heavier than 10kg is rare in Japan. No complications occurred during the perioperative period fortunately in this patient, despite deep vein thrombosis of the left leg and the left kidney being encased within the tumor.