title: Oncologic outcomes of single-incision versus conventional laparoscopic anterior resection for sigmoid colon cancer: a propensity-score matching analysis.
abstract: BACKGROUND
  The aim of this study was to investigate oncologic outcomes, as well as perioperative and pathologic outcomes, of single-incision laparoscopic anterior resection (SILAR) compared with conventional laparoscopic anterior resection (CLAR) for sigmoid colon cancer using propensity-score matching analysis.
  
  
  METHODS
  From July 2009 through April 2012, a total of 407 patients underwent laparoscopic anterior resection for sigmoid colon cancer. Data on short- and long-term outcomes were collected prospectively and reviewed. Propensity-score matching was applied at a ratio of 1:2 comparing the SILAR (n = 60) and CLAR (n = 120) groups.
  
  
  RESULTS
  There was no difference in operation time, estimated blood loss, time to soft diet, and length of hospital stay; however, the SILAR group showed less pain on postoperative day 2 (mean 2.6 vs. 3.6; p = 0.000) and shorter length of incision (3.3 vs. 7.7 cm; p = 0.000) compared with the CLAR group. Morbidity, mortality, and pathologic outcomes were similar in both groups. The 3-year overall survival rates were 94.5 versus 97.1% (p = 0.223), and disease-free survival rates were 89.5 versus 87.4% (p = 0.751) in the SILAR and CLAR groups, respectively.
  
  
  CONCLUSIONS
  The long-term oncologic outcomes, as well as short-term outcomes, of SILAR are comparable with those of CLAR. Although SILAR might have some technical difficulties, it appears to be a safe and feasible option, with better cosmetic results.
authors.affiliation: Division of Colon and Rectal Surgery, Department of Surgery, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
authors.forename: Chang Woo
authors.initials: CW
authors.lastname: Kim
authors.forename: Min Soo
authors.initials: MS
authors.lastname: Cho
authors.forename: Se Jin
authors.initials: SJ
authors.lastname: Baek
authors.forename: Hyuk
authors.initials: H
authors.lastname: Hur
authors.forename: Byung Soh
authors.initials: BS
authors.lastname: Min
authors.forename: Jeonghyun
authors.initials: J
authors.lastname: Kang
authors.forename: Seung Hyuk
authors.initials: SH
authors.lastname: Baik
authors.forename: Kang Young
authors.initials: KY
authors.lastname: Lee
authors.forename: Nam Kyu
authors.initials: NK
authors.lastname: Kim
mesh_terms: D000230:Adenocarcinoma / Q000401:mortality / Q000473:pathology / Q000601:surgery*; D003082:Colectomy / Q000401:mortality*; D003110:Colonic Neoplasms / Q000401:mortality / Q000473:pathology / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D010535:Laparoscopy / Q000401:mortality*; D007902:Length of Stay; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D011379:Prognosis; D057216:Propensity Score; D011446:Prospective Studies; D012189:Retrospective Studies; D012811:Sigmoid Neoplasms / Q000401:mortality / Q000473:pathology / Q000601:surgery*; D015996:Survival Rate