[Gigantic liposarcoma of the retroperitoneum]

A case of giant liposarcoma of the retroperitoneum (7.5 kg, diam. 39 x 30 x 18 cm) is reported. The most frequent sites of onset are discussed and stress is laid on the most useful diagnostic investigations. Surgical treatment, the only possibility of treatment for such large tumors, is often not radical and the recurrence rate is high.