title: Laparoscopic distal pancreatectomy: evolution of a technique at a single institution.
abstract: BACKGROUND
  The pancreas remains an organ for which routine laparoscopic resection is uncommon.
  
  
  METHODS
  This is a review of all distal pancreatectomies performed between January 2003 and December 2009 at Memorial Sloan-Kettering Cancer Center. Variables were compared between laparoscopic and open groups in unmatched and matched analyses.
  
  
  RESULTS
  During the 7-year study period, 343 distal pancreatectomies were performed; 107 (31%) were attempted laparoscopically and 236 (69%) were performed open. The conversion rate was 30%. Laparoscopic patients were younger (median 60 vs 64 years, p < 0.0001), experienced less blood loss (median 150 vs 350 mL, p < 0.0001), longer operative times (median 163 vs 194 minutes, p < 0.0001), shorter hospital stay (median 5 vs 7 days, p < 0.0001), and had fewer postoperative complications (27% vs 40%, p = 0.03) than open patients. The rates of complications of grade 3 or greater (20% vs 20%, p = NS) and pancreatic leak (15% vs 13%, p = NS) were similar between laparoscopic and open groups. Patients having procedures that were converted had a higher body mass index (BMI) than patients who did not (28 vs 25, p = 0.035). Patients with converted resections experienced higher rates of complications of grade 3 or greater (36% vs 20%, p = 0.008) and pancreatic leaks (27% vs 13%, p = 0.03) than open patients. Compared with matched open patients, laparoscopic patients had longer operative times (195 minutes vs 160 minutes, p < 0.0001), less blood loss (175 mL vs 300 mL, p < 0.0001), and shorter hospital stay (5 days vs 6 days, p < 0.001).
  
  
  CONCLUSIONS
  Patients who had laparoscopic distal pancreatectomy experienced decreased blood loss and a shorter hospital stay compared with matched patients undergoing open resection. Careful patient selection is important because patients who required conversion experienced higher rates of complications and pancreatic leak.
authors.affiliation: Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
authors.forename: Shiva
authors.initials: S
authors.lastname: Jayaraman
authors.forename: Mithat
authors.initials: M
authors.lastname: Gonen
authors.forename: Murray F
authors.initials: MF
authors.lastname: Brennan
authors.forename: Michael I
authors.initials: MI
authors.lastname: D'Angelica
authors.forename: Ronald P
authors.initials: RP
authors.lastname: DeMatteo
authors.forename: Yuman
authors.initials: Y
authors.lastname: Fong
authors.forename: William R
authors.initials: WR
authors.lastname: Jarnagin
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Allen
mesh_terms: D000230:Adenocarcinoma / Q000601:surgery*; D005260:Female; D006801:Humans; D010535:Laparoscopy; D008297:Male; D008875:Middle Aged; D010180:Pancreatectomy / Q000379:methods*; D010190:Pancreatic Neoplasms / Q000601:surgery*; D012189:Retrospective Studies; D016896:Treatment Outcome