title: [Retroperitoneoscopic dismembered pyeloplasty for pediatric ureteropelvic junction obstruction: a report of 85 cases].
abstract: OBJECTIVE
  To investigate the clinical application of retroperitoneoscopic dismembered pyeloplasty for pediatric ureteropelvic junction obstruction (UPJO).
  
  
  METHODS
  Of the 85 pediatric patients with UPJO, 56 were boys and 29 were girls. The age of the patients ranged from 2.5 to 11 years (mean = 4.6 years).B-ultrasonography showed hydronephrosis <15 mm (mild) in 15 patients,15-30 mm (moderate) in 59, <30 mm (severe) in the other 6. Intravenous urography (IVU) showed good imaging in 55 patients within 30 min, light imaging in 27 at 30-120 min, and no imaging in 3 after 120 min. The 85 patients underwent retroperitoneoscopic dismembered pyeloplasty. Conventional antegrade or modified antegrade double-J stenting was inserted in the 85 patients intraoperatively.
  
  
  RESULTS
  The operation was successful in all, with no conversion to open surgery during the operation. The mean operation time was 146 min (125-240 min).The mean blood loss was 68 mL (55-112 mL).The mean postoperative hospitalization was 7 d (6-8 d ).Urine leakage occurred in 1 patient and with a good drainage, urine leakage disappeared in 1 week. Follow-up ranged 3-24 months (mean = 11 months).IVU showed on UPJ stricture, and good imaging in 75 patients within 30 min, light imaging in 10 at 30-120 min. Hydronephrosis was remitted:hydronephrosis resolution in 51 patients, mild in 6 and moderate in 3.
  
  
  CONCLUSIONS
  Retroperitoneoscopic dismembered pyeloplasty is a safe, effective and mini-invasive procedure for pediatric ureteropelvic junction obstruction, with a rapid postoperative recovery. It will be the ideal treatment for UPJO in pediatric patients.
authors.affiliation: Department of Urology, Xiangya Hospital, Central South University, Changsha 410008, China.
authors.forename: Zhi
authors.initials: Z
authors.lastname: Chen
authors.forename: Xiang
authors.initials: X
authors.lastname: Chen
authors.forename: Lin
authors.initials: L
authors.lastname: Qi
authors.forename: Liang
authors.initials: L
authors.lastname: Chen
authors.forename: Yancheng
authors.initials: Y
authors.lastname: Luo
authors.forename: Yao
authors.initials: Y
authors.lastname: He
authors.forename: Nannan
authors.initials: N
authors.lastname: Li
authors.forename: Chaoqun
authors.initials: C
authors.lastname: Xie
mesh_terms: D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007682:Kidney Pelvis / Q000601:surgery*; D010535:Laparoscopy / Q000379:methods*; D008297:Male; D012187:Retroperitoneal Space; D014517:Ureteral Obstruction / Q000175:diagnosis / Q000209:etiology / Q000601:surgery*; D013520:Urologic Surgical Procedures / Q000379:methods*