title: [Retroperitoneal fibrosarcoma. Apropos of a case].
abstract: OBJECTIVE
  To report one case of retroperitoneal fibrosarcoma in a 45 year-old caucasian patient cared for at the Public Health System hospitals in Republic of Cuba.
  
  
  METHODS
  Blood analysis showed increased erythrocyte sedimentation rate and moderate anemia. Intravenous urography showed that left kidney was displaced towards midline but presented a good contrast uptake and excretion. Renal ultrasound discovered a large hyperechogenic mass with internal calcifications. CT scan confirmed a left flank tumor with internal necrosis which displaced the kidney. Complete tumour resection was performed confirmatory of the histological diagnosis of retroperitoneal fibrosarcoma. Postoperative chemotherapy was administered.
  
  
  CONCLUSIONS
  Four months after surgery patient presented with severe lumbar-abdominal pain; abdominal ultrasound showed retroperitoneal and intraperitoneal recurrences; patient have a sudden death after a dyspnea episode one month later. Necropsy revealed right pulmonary thromboembolism, abdominal ganglionar metastases and retroperitoneal tumour extension. Our experience confirms the aggressiveness of this tumours and their tendency to local recurrence.
authors.affiliation: Servicios de Urología, Hospital Pediátrico Docente William Soler, La Habana, Cuba. ilisoto2001@yahoo.es
authors.forename: Ileana
authors.initials: I
authors.lastname: Sotolongo Vergo
authors.forename: Regla Emilia
authors.initials: RE
authors.lastname: Suárez Cabrera
authors.forename: Jorge
authors.initials: J
authors.lastname: Arencibia García
mesh_terms: D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use; D001416:Back Pain / Q000209:etiology; D002114:Calcinosis / Q000209:etiology; D003131:Combined Modality Therapy; D003520:Cyclophosphamide / Q000008:administration & dosage; D003609:Dactinomycin / Q000008:administration & dosage; D017809:Fatal Outcome; D005354:Fibrosarcoma / Q000150:complications / Q000175:diagnosis / Q000188:drug therapy / Q000473:pathology* / Q000556:secondary / Q000601:surgery; D006417:Hematuria / Q000209:etiology; D006801:Humans; D008175:Lung Neoplasms / Q000150:complications / Q000556:secondary; D008297:Male; D008727:Methotrexate / Q000008:administration & dosage; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local; D011655:Pulmonary Embolism / Q000209:etiology; D012186:Retroperitoneal Neoplasms / Q000150:complications / Q000175:diagnosis / Q000188:drug therapy / Q000473:pathology* / Q000601:surgery
chemical_list: D003609:Dactinomycin; D003520:Cyclophosphamide; D008727:Methotrexate