• N Maàmouri, I Cheikh, H Ouerghi, A Oukaà, N Belkahla, E Mnif, M Hechiche, M Driss, and A Ben Ammar.
• Service de gastroentérologie B, hôpital La-Rabta, 1007 Tunis Jebbari, Tunisie. nadiamaamouri@yahoo.fr
• Rev Med Interne. 2005 Feb 1; 26 (2): 145-8.

IntroductionRetroperitoneal Liposarcoma is a rare and primary malignancy developed from mesenchymal tissue. It's generally unique and shows an only one histologic component. We report a case of multicentric and synchronous liposarcoma (intraperitoneal and retroperitoneal) and with different histologic types.ExegesesA 53-year old man presented with abdominal pain, increased abdominal girth and weight loss. Physical examination revealed two abdominal masses. Computed tomography scan showed a very large retroperitoneal mass displacing the left kidney, digestive loops and vessels. The patient underwent surgery. One enormous mass of the left renal lodge measuring 50 cm, a retroduodenal mass measuring 15 cm and a nodule of the coecum were removed. Histological examination of the mass of the left renal lodge revealed mixed type liposarcoma (dedifferentiated and myxoid). Histological examination of the retroduodenal mass and of the nodule of the coecum revealed well-differentiated liposarcoma.ConclusionPathological, therapeutic and prognostic aspects of abdominal liposarcoma will be reviewed in this article.

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