[Unique massive recurrence liposarcoma of the retroperitoneum].

Liposarcoma constitutes a heterogeneous group of tumors which rarely arise from the retroperitoneal area. They are the single most common tumor in all sarcoma of the retroperitoneum space. Surgery plays a dominant role in the treatment of retroperitoneal liposarcoma. The histologic subtype and margin of resection are prognostic for survival in primary tumors. Local recurrences are the most frequent cause of failure of the surgery. We report the case of a patient with massive recurrences ofretroperitoneal liposarcoma. A 45 year-old male had low-grade liposarcoma of the retroperitoneum which recurred 6 times within 10 years. The next retroperitoneal recurrence tumor excised weighted 25 kg in total. Seven months after resection the patient feels well. We conclude that aggressive surgery in recurrent tumors can produce prolonged survival in patients with low-grade retroperitoneal liposarcoma.