Giant retroperitoneal hemangiopericytoma: a new case.

Hemangiopericytomas are a rare vascular tumours that are derived from Zimme rmann pericytes. Retroperitoneal hemangiopericytoma is usually bulkly, clin ical silent, and maligant. We present a 48 years old man, with compressives symptoms and a painless mass due to a geant retroperitoneal hemangiopericy toma weigting 3 kg. We are prompted to present this case as it is believed to be the largest hemangiopericytoma reported to date. (C) 2001 Editions sc ientifiques et medicales Elsevier SAS.