title: [Renal fibrosarcoma. Report of a case].
abstract: OBJECTIVE
  To describe one case of renal fibrosarcoma in a patient who presented with left flank pain, fever and palpable mass. We review clinical data, diagnosis, therapeutic aspects and prognostic factors for this type of tumor.
  
  
  METHODS
  The study of the patient included intravenous urography, ultrasound, and CT scan. Left radical nephrectomy was performed.
  
  
  RESULTS
  The patient remained asymptomatic for 14 months, but then presented with a tumor in the frontal-parietal area, dying ten months later due to generalized metastasis.
  
  
  CONCLUSIONS
  Fibrosarcoma is an rare malignant tumor arising from renal mesenchyma with poor prognosis. In radiological tests renal sarcomas show malignant tumor characteristics, but without a specific histology they cannot be differentiated from a renal cell carcinoma.
authors.affiliation: Servicio de Urologia, Hospital Universitario Manuel Fajardo, Ciudad de la Habana, Cuba. ares@infomed.sld.cu
authors.forename: Yolanda
authors.initials: Y
authors.lastname: Ares Valdés
authors.forename: Nixcela
authors.initials: N
authors.lastname: Ares Valdés
authors.forename: Daysi María
authors.initials: DM
authors.lastname: Contreras Duvelgel
mesh_terms: D017809:Fatal Outcome; D005260:Female; D005354:Fibrosarcoma / Q000175:diagnosis / Q000601:surgery; D006801:Humans; D007680:Kidney Neoplasms / Q000175:diagnosis / Q000601:surgery; D008875:Middle Aged