title: Renal liposarcoma.
abstract: BACKGROUND
  Liposarcoma is a malignant mesenchymal tumor frequently located in retroperitoneum, and rarely presenting an isolated lesion in kidney.
  
  
  METHODS
  Female, Caucasian, 49-year old patient, with family history of renal polycystic disease, was selected for organ donation. During preoperative examinations a renal pleomorphic liposarcoma was detected. She was treated with radical nephrectomy and remains asymptomatic, without evidences of recurrence in control ecographic examinations after a 4-year follow-up.
  
  
  CONCLUSIONS
  Renal liposarcoma is a rare tumor. We report one case incidentally diagnosed during a routine pre-transplantation assessment in renal donor.
authors.affiliation: West Paraná State University, UNIOESTE, Cascavel, Paraná, Brazil. diogobader@hotmail.com
authors.forename: Diogo A L
authors.initials: DA
authors.lastname: Bader
authors.forename: Luis A B
authors.initials: LA
authors.lastname: Peres
authors.forename: Sérgio L
authors.initials: SL
authors.lastname: Bader
mesh_terms: D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000175:diagnosis / Q000601:surgery; D008080:Liposarcoma / Q000175:diagnosis / Q000601:surgery; D008875:Middle Aged