title: [Giant retroperitoneal liposarcoma. One case report].
abstract: BACKGROUND
  Retroperitoneal 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.
  
  
  METHODS
  A 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.
  
  
  CONCLUSIONS
  Pathological, therapeutic and prognostic aspects of abdominal liposarcoma will be reviewed in this article.
authors.affiliation: Service de gastroentérologie B, hôpital La-Rabta, 1007 Tunis Jebbari, Tunisie. nadiamaamouri@yahoo.fr
authors.forename: N
authors.initials: N
authors.lastname: Maàmouri
authors.forename: I
authors.initials: I
authors.lastname: Cheikh
authors.forename: H
authors.initials: H
authors.lastname: Ouerghi
authors.forename: A
authors.initials: A
authors.lastname: Oukaà
authors.forename: N
authors.initials: N
authors.lastname: Belkahla
authors.forename: E
authors.initials: E
authors.lastname: Mnif
authors.forename: M
authors.initials: M
authors.lastname: Hechiche
authors.forename: M
authors.initials: M
authors.lastname: Driss
authors.forename: A
authors.initials: A
authors.lastname: Ben Ammar
mesh_terms: D006801:Humans; D008080:Liposarcoma / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D008297:Male; D008875:Middle Aged; D012186:Retroperitoneal Neoplasms / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D012187:Retroperitoneal Space / Q000473:pathology; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome