[Retroperitoneal liposarcoma with reactive pleural effusion: a case report].

A case of retroperitoneal liposarcoma with reactive pleural effusion is reported. A 58-year-old male who complained of weight gain and edema had visited another clinic in May, 2002. Computed tomography revealed a retroperitoneal tumor, 11 x 9 x 9.5 cm in size, surrounding his right kidney and bilateral pleural effusion. Complete resection of the tumor and right kidney was performed with a transperitoneal approach. Though the tumor was limited within Gerota's fascia, we noted two liters of abdominal ascites. Surgical specimen was histologically diagnosed as well differentiated liposarcoma. The post operative course was uneventful. The pleural effusion disappeared, and serum total protein level was normalized. He has remained free of disease for one year.