[Management of perirenal liposarcoma]

Eighteen cases of perirenal liposarcoma were treated from 1969 to 1991. The average age of patients was 49 years (range 32-66 years). The main clinical features were abdominal mass and compression symptoms. Eight tumors originated from the right side and ten from the left. Sixty seven percent of the patients previously underwent one to three surgical procedures (laparotomy 3 cases, recurrence 9 cases). Tumors were resectable in all patients. The smallest tumor was 14 x 12 x 10 cm in size, the largest was 65 x 45 x 24 cm and 24 kg in weight. Preserved kidney was found to be highly related with local recurrence. Therefore, enbloc resection of the tumor with the kidney should be the operation of choice.