title: [Endoscopic treatment of vesicoureteral reflux: histologic findings].
abstract: OBJECTIVE
  Vesicoureteral reflux is a pathologic entity with different forms of therapeutic management, one of which is endoscopic injection of various materials. We show some histological changes produced by these materials in the bladder wall.
  
  
  METHODS
  We study three samples of intravesical ureter from three children suffering vesicoureteral reflux. The ureters were obtained during ureteral reimplantation surgery.
  
  
  RESULTS
  We show the changes found with various materials under study (polytetrafluorethylene, polydimethylsiloxane, hyaluronic acid and dextranomer copolimer) observing less conjunctive tissue with the two latter and with the more encapsulated hyaluronic acid - dextranomer copolimer.
  
  
  CONCLUSIONS
  Migrations and granulomas are described with various materials and we ascertained the presence of foreign body reaction and fibrosis within the bladder wall. More studies in human beings are required to determine the best product for endoscopic injection.
authors.affiliation: Servicio de Cirugía Pediátrica, Hospital Universitario 12 de Octubre, Madrid, España. maria_lopez_d@yahoo.es
authors.forename: María
authors.initials: M
authors.lastname: López Díaz
authors.forename: Francisco
authors.initials: F
authors.lastname: López Vázquez
authors.forename: Andrés
authors.initials: A
authors.lastname: Gómez Fraile
authors.forename: Adolfo
authors.initials: A
authors.lastname: Aransay Bramtot
authors.forename: Daniel
authors.initials: D
authors.lastname: Cabezalí Barbancho
authors.forename: Raquel
authors.initials: R
authors.lastname: Tejedor Sánchez
mesh_terms: D002648:Child; D002675:Child, Preschool; D003911:Dextrans / Q000008:administration & dosage / Q000009:adverse effects; D004129:Dimethylpolysiloxanes / Q000008:administration & dosage / Q000009:adverse effects; D005260:Female; D005549:Foreign-Body Reaction / Q000209:etiology / Q000473:pathology* / Q000628:therapy*; D006801:Humans; D006820:Hyaluronic Acid / Q000008:administration & dosage / Q000009:adverse effects; D007267:Injections; D008297:Male; D011138:Polytetrafluoroethylene / Q000008:administration & dosage / Q000009:adverse effects; D001743:Urinary Bladder / Q000473:pathology*
chemical_list: D003911:Dextrans; D004129:Dimethylpolysiloxanes; C094535:deflux; C487487:dextranomer-hyaluronic acid copolymer; C013830:baysilon; D011138:Polytetrafluoroethylene; D006820:Hyaluronic Acid