title: Laparoendoscopic single-site versus conventional laparoscopic pyeloplasty: a matched pair analysis.
abstract: OBJECTIVE
  To compare the outcomes of laparoendoscopic single-site pyeloplasty versus those of conventional laparoscopic pyeloplasty.
  
  
  METHODS
  A total of 26 laparoendoscopic single-site pyeloplasty cases carried out in University Hospital: Kyoto Prefectural University of Medicine, Kyoto, Japan, from 2008 to 2013 were compared with a control group of 26 age-matched laparoscopic pyeloplasty cases carried out during the same study period.
  
  
  RESULTS
  The mean age of the patients was 20.4 years (range 1-56 years). Laparoendoscopic single-site pyeloplasty was carried out on the right in nine cases and on the left in 17 cases. The operative time was 246 ± 68 min. Regarding the 14 pediatric patients, the mean age was 7.1 years (range 1-14 years). The operative time was 243 ± 49 min. As for the 12 adult patients, the mean age was 35.8 years (range 16-56 years). The operative time was 248 ± 86 min. The mean operative time of the control group in age-matched laparoscopic pyeloplasty was 239 ± 51 min. Times were 229 ± 54 min for the pediatric patients and 253 ± 45 min for the adult patients. There was no significant difference in the operative time between the control group and the laparoendoscopic single-site group for both adults and children. Blood loss was minimal, and no intraoperative and postoperative complications were observed in the 26 laparoendoscopic single-site pyeloplasty cases.
  
  
  CONCLUSIONS
  The present findings suggest that laparoendoscopic single-site pyeloplasty can be used in both pediatric and adult patients, offering a superior cosmetic outcome than conventional laparoscopic pyeloplasty, and a lower degree of postoperative pain. A large-scale prospective, randomized study is required to confirm these findings, and to define the future role of laparoendoscopic single-site pyeloplasty.
authors.affiliation: Department of Urology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan.
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Naitoh
authors.forename: Akihiro
authors.initials: A
authors.lastname: Kawauchi
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Yamada
authors.forename: Atsuko
authors.initials: A
authors.lastname: Fujihara
authors.forename: Fumiya
authors.initials: F
authors.lastname: Hongo
authors.forename: Kazumi
authors.initials: K
authors.lastname: Kamoi
authors.forename: Koji
authors.initials: K
authors.lastname: Okihara
authors.forename: Tsuneharu
authors.initials: T
authors.lastname: Miki
mesh_terms: D000293:Adolescent; D000328:Adult; D016022:Case-Control Studies; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007668:Kidney / Q000601:surgery*; D010535:Laparoscopy / Q000379:methods*; D008297:Male; D008875:Middle Aged; D013520:Urologic Surgical Procedures / Q000379:methods*; D055815:Young Adult
keywords: laparoendoscopic single-site surgery; pediatrics; pyeloplasty