title: Robotic single-site versus laparo-endoscopic single-site surgery for adnexal tumours: a propensity score-matching analysis.
abstract: BACKGROUND
  The aim of this study was to compare the surgical outcomes of robotic single-site (RSS) and laparo-endoscopic single-site (LESS) surgery for adnexal tumours and evaluate the feasibility of RSS surgery.
  
  
  METHODS
  RSS surgery was performed using the da Vinci Single-Site® surgical platform and LESS surgery using a single multi-channel port system. Surgical outcomes were compared between RSS (n = 20) and LESS (n = 228) after 1:4 propensity score matching.
  
  
  RESULTS
  After the propensity score matching, the RSS group showed longer operating times than the LESS (91.1 vs 66.1 min; p = 0.001). While the LESS showed 1.3% of major complication rates, the RSS group had no perioperative complication. For the LESS, 2.5% of patients needed additional port insertion.
  
  
  CONCLUSIONS
  The RSS surgery for adnexal tumours could be performed safely without complications or additional port insertion. Although it showed a longer operating time, further experience and technical refinements will continue to improve operative results. Copyright © 2015 John Wiley & Sons, Ltd.
authors.affiliation: Department of Obstetrics and Gynaecology, Ajou University School of Medicine, Republic of Korea.
authors.forename: Jiheum
authors.identifier: http://orcid.org/0000-0003-3964-5925
authors.initials: J
authors.lastname: Paek
authors.affiliation: Office of Biostatistics, Ajou University School of Medicine, Republic of Korea.
authors.forename: Jung-Dong
authors.initials: JD
authors.lastname: Lee
authors.affiliation: Department of Obstetrics and Gynaecology, Ajou University School of Medicine, Republic of Korea.
authors.forename: Tae Wook
authors.initials: TW
authors.lastname: Kong
authors.affiliation: Department of Obstetrics and Gynaecology, Ajou University School of Medicine, Republic of Korea.
authors.forename: Suk-Joon
authors.initials: SJ
authors.lastname: Chang
authors.affiliation: Department of Obstetrics and Gynaecology, Ajou University School of Medicine, Republic of Korea.
authors.forename: Hee-Sug
authors.initials: HS
authors.lastname: Ryu
mesh_terms: D000328:Adult; D004724:Endoscopy / Q000379:methods*; D005187:Fallopian Tubes / Q000601:surgery*; D005260:Female; D006801:Humans; D008875:Middle Aged; D061646:Operative Time; D010051:Ovarian Neoplasms / Q000601:surgery*; D010052:Ovariectomy / Q000379:methods*; D010053:Ovary / Q000601:surgery*; D011184:Postoperative Period; D057216:Propensity Score; D012189:Retrospective Studies; D065287:Robotic Surgical Procedures / Q000379:methods*; D016896:Treatment Outcome
keywords: laparoscopy; ovarian tumour; robotic