title: [Role of percutaneous endopyelotomy in the treatment of pyeloureteral junction stenosis after failed ureteropyeloplasty].
abstract: OBJECTIVE
  To determine the value of percutaneous endopyelotomy (PE) in the treatment of ureteropelvic junction (UPJ) obstruction, particularly after failed ureteropelvioplasty.
  
  
  METHODS
  A series of 14 (PE) procedures performed at our institution were retrospectively studied. The patients were divided into two groups: group I comprised patients in whom PE was used for primary repair and group II comprised patients submitted to PE after failed ureteropelvioplasty. The patients were assessed for hydronephrosis, lithiasis, previous procedures performed, operating time, duration of hospital stay and outcome. The Fisher test and Mann-Whitney U test were used for statistical analysis.
  
  
  RESULTS
  The success of PE did not correlate with the degree of hydronephrosis, the presence of calculus or a previous procedure. The operating times were similar for both groups and for patients with and without lithiasis. The results were better for group II than for group I (p = 0.01).
  
  
  CONCLUSIONS
  1. In correctly selected cases, PE appears to be a good method of treatment for recurrent UPJ obstruction after failed ureteropelvioplasty. 2. The difficulty and the operating time of PE for recurrent UPJ obstruction is not different to that of previously untreated cases. No factor was found to correlate more with the success or failure of PE.
authors.affiliation: Servicio de Urología, Fundación Puigvert, Barcelona, España.
authors.forename: F
authors.initials: F
authors.lastname: Millán Rodríguez
authors.forename: J M
authors.initials: JM
authors.lastname: Vayreda Martija
authors.forename: J
authors.initials: J
authors.lastname: Segarra Tomás
authors.forename: J
authors.initials: J
authors.lastname: Salvador Bayarri
authors.forename: J
authors.initials: J
authors.lastname: Vicente Rodríguez
mesh_terms: D000328:Adult; D004724:Endoscopy; D005260:Female; D006801:Humans; D007682:Kidney Pelvis / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D017211:Treatment Failure; D014517:Ureteral Obstruction / Q000601:surgery*