title: [Retroperitoneal liposarcoma. Presentation of 2 cases and review of the literature].
mesh_terms: D000368:Aged; D003131:Combined Modality Therapy; D006801:Humans; D008080:Liposarcoma / Q000473:pathology* / Q000628:therapy; D008297:Male; D008875:Middle Aged; D012186:Retroperitoneal Neoplasms / Q000473:pathology* / Q000628:therapy
vernacular_title: Liposarcoma retroperitoneal. Presentación de dos casos y revisión de la literatura.