title: Contralateral reflux after unilateral ureteral reimplantation.
abstract: OBJECTIVE
  We analyzed the incidence and outcome of postoperative contralateral reflux after unilateral ureteral reimplantation by the Cohen and Glenn-Anderson techniques.
  
  
  METHODS
  We retrospectively reviewed the records of 120 patients 3 months to 21 years old in whom unilateral vesicoureteral reflux was treated by unilateral reimplantation. The incidence of postoperative contralateral reflux was documented by followup voiding cystourethrography.
  
  
  RESULTS
  Overall 19% of patients who underwent unilateral reimplantation had contralateral vesicoureteral reflux postoperatively, including 21% after the Cohen and 17% after the Glenn-Anderson procedure. Of the cases 61% spontaneously resolved, 13% were surgically corrected and 26% continue to be followed.
  
  
  CONCLUSIONS
  The rates of postoperative contralateral vesicoureteral reflux are not significantly different after Cohen and Glenn-Anderson repair. A majority of cases will resolve spontaneously within 2 years. The likelihood of trigonal distortion as the etiology of contralateral reflux is low given the similar incidence in cross-trigonal and ureteral advancement reimplantation.
authors.affiliation: Division of Urology, Brown University, Providence, Rhode Island, USA.
authors.forename: D M
authors.initials: DM
authors.lastname: Hoenig
authors.forename: D A
authors.initials: DA
authors.lastname: Diamond
authors.forename: R
authors.initials: R
authors.lastname: Rabinowitz
authors.forename: A A
authors.initials: AA
authors.lastname: Caldamone
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D005500:Follow-Up Studies; D006801:Humans; D015994:Incidence; D007223:Infant; D011183:Postoperative Complications / Q000453:epidemiology*; D012189:Retrospective Studies; D016896:Treatment Outcome; D014513:Ureter / Q000601:surgery*; D014718:Vesico-Ureteral Reflux / Q000453:epidemiology* / Q000601:surgery