title: The single-center experience with the standardization of single-site laparoscopic colectomy for right-sided colon cancer.
abstract: OBJECTIVE
  Complete mesocolic excision (CME) with central vascular ligation (CVL) has been widely accepted as a surgical treatment for right-sided colon cancer. Single-site laparoscopic colectomy (SLC) is associated with reduced pain and improved cosmesis, in comparison to the multi-site laparoscopic colectomy (MCL). Although the feasibility of CME + CVL under MCL has been reported, SLC for right-sided colon cancer is generally challenging. The purpose of this study is to demonstrate our efforts to standardize the SLC for right-sided colon cancer.
  
  
  METHODS
  This retrospective study enrolled 202 consecutive patients with right-sided colon cancer who underwent laparoscopic colectomy for right-sided colon cancer, using an inferior approach and intraoperative navigation surgery, between 2008 and 2014. The patients were divided into 3 groups, based on the period of treatment, as follows: Period I (2008-2009, n = 56), Period II (2010-2011, n = 70), and Period III (2012-2014, n = 76).
  
  
  RESULTS
  The patient's baseline characteristics did not differ among the three periods. The ratio of SLC significantly increased with the passage of the time. The short-term outcomes were similar among the three periods. As for oncological clearance, there was a significant increase in the number of resected lymph nodes with the passage of the time (P < 0.05).
  
  
  CONCLUSIONS
  We successfully standardized SLC for right-sided colon cancer.
authors.affiliation: Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan. htakahashi@gesurg.med.osaka-u.ac.jp.
authors.forename: Hidekazu
authors.initials: H
authors.lastname: Takahashi
authors.affiliation: Department of Surgery, Surgical Oncology and Science, Sapporo Medical University, Sapporo, Japan.
authors.forename: Ichiro
authors.initials: I
authors.lastname: Takemasa
authors.affiliation: Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
authors.forename: Naotsugu
authors.initials: N
authors.lastname: Haraguchi
authors.affiliation: Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
authors.forename: Junichi
authors.initials: J
authors.lastname: Nishimura
authors.affiliation: Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
authors.forename: Taishi
authors.initials: T
authors.lastname: Hata
authors.affiliation: Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Yamamoto
authors.affiliation: Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
authors.forename: Chu
authors.initials: C
authors.lastname: Matsuda
authors.affiliation: Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
authors.forename: Tsunekazu
authors.initials: T
authors.lastname: Mizushima
authors.affiliation: Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
authors.forename: Yuichiro
authors.initials: Y
authors.lastname: Doki
authors.affiliation: Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
authors.forename: Masaki
authors.initials: M
authors.lastname: Mori
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D003082:Colectomy / Q000379:methods / Q000592:standards*; D003110:Colonic Neoplasms / Q000601:surgery*; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D010535:Laparoscopy / Q000379:methods / Q000592:standards*; D008026:Ligation / Q000379:methods; D008197:Lymph Node Excision; D008297:Male; D008646:Mesocolon / Q000601:surgery; D008875:Middle Aged; D012189:Retrospective Studies
keywords: Central vascular ligation; Colon cancer; Complete mesocolic excision; Laparoscopic surgery; Navigation surgery; Single-site laparoscopic colectomy