title: [Bladder leiomyosarcoma: case report].
abstract: OBJECTIVE
  To report a new case of bladder leiomyoma in an adult.
  
  
  METHODS
  64-year-old female patient consulting for a four-month hematuria diagnosed of a bladder intraluminal tumor on ultrasound during a routine gynecologic revision. Cystoscopy confirmed the presence of the tumor. Transurethral resection was indicated.
  
  
  RESULTS
  Pathology reported a definitive diagnosis of leiomyosarcoma. Anterior pelvic exenteration was subsequently performed. On one year follow-up there is no evidence of disease.
  
  
  CONCLUSIONS
  We emphasize the rarity of these neoplasias. We comment on their main characteristics, pointing out the importance of immunohistochemical staining for the definitive histological diagnosis. We refer the therapeutic options described in the literature.
authors.affiliation: Servicio de Urología, Complejo Hospitalario de Zamora, España. ncruz_g@hotmail.com
authors.forename: Nicolás Alberto
authors.initials: NA
authors.lastname: Cruz Guerra
authors.forename: Angel
authors.initials: A
authors.lastname: Fradejas Rodríguez
authors.forename: Alberto
authors.initials: A
authors.lastname: del Valle Manteca
authors.forename: Inmaculada
authors.initials: I
authors.lastname: Ursúa Sarmiento
authors.forename: Antonio
authors.initials: A
authors.lastname: Tarroc Blanco
mesh_terms: D005260:Female; D006801:Humans; D007890:Leiomyosarcoma / Q000175:diagnosis*; D008875:Middle Aged; D001749:Urinary Bladder Neoplasms / Q000175:diagnosis*