title: [Chemoprophylaxis and endoscopical treatment of upper urinary tract tumors recurrences].
abstract: OBJECTIVE
  Upper urinary tract tumors are a rare condition. We review our experience in the diagnosis of upper urinary tract tumors and their recurrences, emphasizing the management of recurrences.
  
  
  METHODS
  From January 1980 to June 2002 139 endourological procedures were carried out in 94 patients with the working diagnosis of upper urinary tract tumor.
  
  
  RESULTS
  The overall treatment failure rate was 18.7 with ureteroscopy being the least efficient technique.
  
  
  CONCLUSIONS
  In our experience, there is an indication for conservative endourological treatment in superficial low grade G1-2 tumors smaller than 2 cm.
authors.affiliation: Servicio de Urología, Hospital Universitario La Paz, Madrid.
authors.forename: Luis
authors.initials: L
authors.lastname: Hidalgo Togores
authors.forename: José María
authors.initials: JM
authors.lastname: García Mediero
authors.forename: Carlos
authors.initials: C
authors.lastname: Nuñez Mora
authors.forename: Javier
authors.initials: J
authors.lastname: Peña de la Barthel
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000970:Antineoplastic Agents / Q000627:therapeutic use*; D018890:Chemoprevention; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000473:pathology / Q000628:therapy; D008297:Male; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000453:epidemiology / Q000473:pathology / Q000628:therapy*; D012307:Risk Factors; D014513:Ureter / Q000473:pathology / Q000601:surgery; D014516:Ureteral Neoplasms / Q000473:pathology / Q000628:therapy*; D018666:Ureteroscopy
chemical_list: D000970:Antineoplastic Agents