title: [Leiomyosarcoma originating in the renal vein. A special case].
abstract: OBJECTIVE
  An additional case of leiomyosarcoma of the renal vein is presented and the literature reviewed.
  
  
  RESULTS
  The patient had a history of hypertension. He and his brother were the first case of twins with bilateral retinoblastoma reported in the literature. The pathological findings were diagnostic of leiomyosarcoma of the renal vein. The clinical features, diagnosis and treatment are discussed.
  
  
  CONCLUSIONS
  Leiomyosarcoma of the renal vein is an uncommon tumor which presents difficulties in making the preoperative diagnosis. A possible relationship may exist between this tumor type and the radiotherapy administered during childhood due to retinoblastoma.
authors.affiliation: Servicios de Urología y Patología, Hospital Clínico y Provincial, Universidad de Barcelona, España.
authors.forename: J
authors.initials: J
authors.lastname: Alcover García
authors.forename: J
authors.initials: J
authors.lastname: Ramírez Ruz
authors.forename: B
authors.initials: B
authors.lastname: Umbert Canals
authors.forename: W
authors.initials: W
authors.lastname: Carrere Springli
authors.forename: M
authors.initials: M
authors.lastname: Fernández-Conde Montoya
authors.forename: P
authors.initials: P
authors.lastname: Carretero González
mesh_terms: D000328:Adult; D001932:Brain Neoplasms / Q000000981:diagnostic imaging; D004200:Diseases in Twins; D005134:Eye Neoplasms; D017809:Fatal Outcome; D006801:Humans; D007890:Leiomyosarcoma / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D008297:Male; D009378:Neoplasms, Multiple Primary; D011859:Radiography; D012082:Renal Veins; D012175:Retinoblastoma