title: [Current treatment of lithiasis in congenital renoureteral malformations].
abstract: OBJECTIVE
  To evaluate the treatment of urinary calculi in renoureteral malformations.
  
  
  METHODS
  From April 1988 to December 2000, we have treated 158 patients with renoureteral malformations (36 horseshoe kidneys, 32 caliceal diverticula, 2 megacaliosis, 2 crossed renal ectopy, 3 polycystosis, 7 hydrocalyx, 24 complete duplex ureter, 18 incomplete duplex ureter, 22 ureterocele, 2 segmental megaureter).
  
  
  RESULTS
  Renoureteral malformations were diagnosed in 158 of 19,000 patients that were treated in our stone unit from April 1988 and December 2000. Horseshoe kidney: 54% of the patients treated by ESWL are stone-free; PNL was performed in 2 patients and conventional surgery in another 2 patients. Caliceal diverticulum: 42% of the patients treated by ESWL are stone-free; 3 patients underwent conventional surgery. Other renal malformations: 62% of the patients treated by ESWL are stone-free. Ureteral malformations: duplex ureter and megaureter: 82% of the patients treated by ESWL are stone-free. Ureterocele: due to the poor results achieved by ESWL, we performed endoscopic transurethral meatotomy.
  
  
  CONCLUSIONS
  These results indicate that ESWL alone can be considered to be the treatment of choice for small calculi in patients with renal malformations, although we consider it to be mandatory to perform individual assessment of the urinary tract and stone size in these patients in order to choose the best therapeutic option. The same criteria for the normal urinary tract can be applied in ureteral malformations except ureteroceles, for which we advocate performing endoscopic surgery for stone removal.
authors.affiliation: Servicio de Urología, Unidad de Litiasis, Ciudad Sanitaria, Universitaria de Bellvitge, Barcelona, España.
authors.forename: C
authors.initials: C
authors.lastname: Torrecilla Ortiz
authors.forename: S
authors.initials: S
authors.lastname: Colom Feixas
authors.forename: J
authors.initials: J
authors.lastname: Contreras García
authors.forename: E
authors.initials: E
authors.lastname: Trilla Herrera
authors.forename: S
authors.initials: S
authors.lastname: Arbelaez Arango
authors.forename: N
authors.initials: N
authors.lastname: Serrallach Milá
mesh_terms: D006801:Humans; D007668:Kidney / Q000002:abnormalities; D007669:Kidney Calculi / Q000209:etiology / Q000628:therapy*; D007674:Kidney Diseases / Q000150:complications / Q000151:congenital*; D014513:Ureter / Q000002:abnormalities*; D014514:Ureteral Calculi / Q000209:etiology / Q000628:therapy*; D014515:Ureteral Diseases / Q000150:complications / Q000151:congenital*