title: The value of a second transurethral resection in evaluating patients with bladder tumors.
abstract: OBJECTIVE
  The role of a routine second transurethral resection in evaluating and managing bladder tumors is defined.
  
  
  METHODS
  From January to October 1998, 150 patients with new or recurrent bladder tumors underwent repeat transurethral resection within 2 to 6 weeks after the initial resection, and the results, including the presence of residual tumor and tumor stage, were compared.
  
  
  RESULTS
  Of the 150 cases 36 (24%) had no and 114 (76%) had residual tumor on repeat transurethral resection. Of 96 cases with superficial (Ta, Tis, T1) bladder tumors 72 (75%) had residual noninvasive tumor and 28 (29%) were up staged to invasive tumor. Among 54 patients with a muscle invasive tumor 12 (22%) had no residual tumor on repeat transurethral resection. Results of the second resection changed tumor treatment in 50 patients (33%).
  
  
  CONCLUSIONS
  Many patients with bladder tumors have tumor present after an initial trans-urethral resection. Routine repeat resection is advised to control noninvasive tumors and to detect residual tumor invasion.
authors.affiliation: Department of Surgery, Memorial Sloan-Kettering Cancer Center, New York, New York, USA.
authors.forename: H W
authors.initials: HW
authors.lastname: Herr
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D009361:Neoplasm Invasiveness; D009364:Neoplasm Recurrence, Local / Q000601:surgery*; D009367:Neoplasm Staging; D012086:Reoperation; D014521:Urethra; D001749:Urinary Bladder Neoplasms / Q000601:surgery*; D013520:Urologic Surgical Procedures / Q000379:methods