title: Need for intravenous urography in patients with primary transitional carcinoma of the bladder?
abstract: OBJECTIVE
  To assess the need for and the efficacy of intravenous urography in the detection of a synchronous upper tract urothelial tumor (UTUT) in patients with primary bladder tumor.
  
  
  METHODS
  Between 1986 and 1996, 793 patients were diagnosed as having primary tumor of the bladder with pathological confirmation of transitional cell carcinoma. All patients underwent intravenous urography prior to transurethral resection. The mean age of the patients was 66.4 years, and 87.7% of them were male. Of these patients, 72% had superficial tumors, while the remaining 28% had infiltrative tumors. Histological classification of the tumors was: grade I, 10%; grade II, 45%, and grade III, 45%. A chi(2) test was used for statistical analysis.
  
  
  RESULTS
  The incidence of upper tract urothelial tumors was 1.1% (9 patients), although intravenous urography only diagnosed 6 cases (0.7%). No differences were seen between patients with or without UTUT with regard to histological grade (p = 0.7), multiple bladder tumors (p = 0.7) and tumor infiltration (p = 0.9). In 5.8% of the patients an unsuspected associated pathology was detected which required treatment in 1.4% of the cases.
  
  
  CONCLUSIONS
  Due to the low incidence of UTUT (1.1%) in our series and to the fact that intravenous urography was effective in diagnosing synchronous UTUT in only 66.6% of cases, we do not consider that this procedure should be routinely performed in the diagnostic workup of patients with primary transitional cell tumor of the bladder.
authors.affiliation: Servicio de Urología, HGU Gregorio Marañón, Madrid, España.
authors.forename: F
authors.initials: F
authors.lastname: Herranz-Amo
authors.forename: J M
authors.initials: JM
authors.lastname: Diez-Cordero
authors.forename: F
authors.initials: F
authors.lastname: Verdú-Tartajo
authors.forename: G
authors.initials: G
authors.lastname: Bueno-Chomón
authors.forename: F
authors.initials: F
authors.lastname: Leal-Hernández
authors.forename: A
authors.initials: A
authors.lastname: Bielsa-Carrillo
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002295:Carcinoma, Transitional Cell / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012680:Sensitivity and Specificity; D019564:Unnecessary Procedures; D001749:Urinary Bladder Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D014567:Urography / Q000379:methods* / Q000706:statistics & numerical data