title: Outcomes of robotic vs laparoscopic hepatectomy: A systematic review and meta-analysis.
abstract: OBJECTIVE
  To perform a systematic review and meta-analysis on robotic-assisted vs laparoscopic liver resections.
  
  
  METHODS
  A systematic literature search was performed using PubMed, Scopus and the Cochrane Library Central. Participants of any age and sex, who underwent robotic or laparoscopic liver resection were considered following these criteria: (1) studies comparing robotic and laparoscopic liver resection; (2) studies reporting at least one perioperative outcome; and (3) if more than one study was reported by the same institute, only the most recent was included. The primary outcome measures were set for estimated blood loss, operative time, conversion rate, R1 resection rate, morbidity and mortality rates, hospital stay and major hepatectomy rates.
  
  
  RESULTS
  A total of 7 articles, published between 2010 and 2014, fulfilled the selection criteria. The laparoscopic approach was associated with a significant reduction in blood loss and lower operative time (MD = 83.96, 95%CI: 10.51-157.41, P = 0.03; MD = 68.43, 95%CI: 39.22-97.65, P < 0.00001, respectively). No differences were found with respect to conversion rate, R1 resection rate, morbidity and hospital stay.
  
  
  CONCLUSIONS
  Laparoscopic liver resection resulted in reduced blood loss and shorter surgical times compared to robotic liver resections. There was no difference in conversion rate, R1 resection rate, morbidity and length of postoperative stay.
authors.affiliation: Roberto Montalti, Giammauro Berardi, Roberto Ivan Troisi, Department of General and Hepato-Biliary Surgery, Liver Transplantation Service, Ghent University Hospital and Medical School, 9000 Ghent, Belgium.
authors.forename: Roberto
authors.initials: R
authors.lastname: Montalti
authors.affiliation: Roberto Montalti, Giammauro Berardi, Roberto Ivan Troisi, Department of General and Hepato-Biliary Surgery, Liver Transplantation Service, Ghent University Hospital and Medical School, 9000 Ghent, Belgium.
authors.forename: Giammauro
authors.initials: G
authors.lastname: Berardi
authors.affiliation: Roberto Montalti, Giammauro Berardi, Roberto Ivan Troisi, Department of General and Hepato-Biliary Surgery, Liver Transplantation Service, Ghent University Hospital and Medical School, 9000 Ghent, Belgium.
authors.forename: Alberto
authors.initials: A
authors.lastname: Patriti
authors.affiliation: Roberto Montalti, Giammauro Berardi, Roberto Ivan Troisi, Department of General and Hepato-Biliary Surgery, Liver Transplantation Service, Ghent University Hospital and Medical School, 9000 Ghent, Belgium.
authors.forename: Marco
authors.initials: M
authors.lastname: Vivarelli
authors.affiliation: Roberto Montalti, Giammauro Berardi, Roberto Ivan Troisi, Department of General and Hepato-Biliary Surgery, Liver Transplantation Service, Ghent University Hospital and Medical School, 9000 Ghent, Belgium.
authors.forename: Roberto Ivan
authors.initials: RI
authors.lastname: Troisi
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016063:Blood Loss, Surgical; D016009:Chi-Square Distribution; D005260:Female; D006498:Hepatectomy / Q000009:adverse effects / Q000379:methods* / Q000401:mortality; D006801:Humans; D010535:Laparoscopy / Q000009:adverse effects / Q000401:mortality; D007902:Length of Stay; D008297:Male; D008875:Middle Aged; D016017:Odds Ratio; D061646:Operative Time; D011183:Postoperative Complications / Q000401:mortality; D012307:Risk Factors; D065287:Robotic Surgical Procedures / Q000009:adverse effects / Q000401:mortality; D013997:Time Factors; D016896:Treatment Outcome
keywords: Laparoscopic liver resections; Meta-analysis; Outcome; Robotic liver resections; Systematic review