title: Retroperitoneal liposarcoma.
mesh_terms: D000368:Aged; D006801:Humans; D008080:Liposarcoma / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D008297:Male; D012186:Retroperitoneal Neoplasms / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D014646:Varicocele / Q000209:etiology