title: [Multiple primary retroperitoneal liposarcoma].
mesh_terms: D000328:Adult; D006801:Humans; D008080:Liposarcoma / Q000473:pathology / Q000601:surgery*; D008297:Male; D009378:Neoplasms, Multiple Primary / Q000473:pathology / Q000601:surgery*; D012186:Retroperitoneal Neoplasms / Q000473:pathology / Q000601:surgery*