title: Single-incision laparoscopic colectomy for colon cancer: early experience with 31 cases.
abstract: BACKGROUND
  Transumbilical single-port surgery has been developed with the aim to further reduce the invasiveness of conventional laparoscopy.
  
  
  OBJECTIVE
  This study aimed to report our experience with 31 patients who were treated with transumbilical single-incision laparoscopic colectomy for colon cancer.
  
  
  METHODS
  This is a retrospective review of prospectively gathered data.
  
  
  METHODS
  This study was conducted at the Department of Surgery of Juntendo University Urayasu Hospital between April 2009 and April 2010. Data were obtained from a prospectively maintained single-institution laparoscopic colon cancer database.
  
  
  METHODS
  Thirty-one consecutively selected patients (mean BMI, 22.5 ± 2.3) were evaluated.
  
  
  METHODS
  All patients underwent single-incision laparoscopic colectomy for colon cancer. Two different approaches were used for single-incision laparoscopic colectomy: the trocar insertion method and the SILS port method. The trocar insertion method was adopted in 22 of 31 patients, and the SILS port method was used in 9 patients.
  
  
  METHODS
  The main measures of outcomes were intraoperative findings, postoperative course, and oncological outcomes.
  
  
  RESULTS
  The most common procedure was sigmoid colon resection performed in 12 of 31 (39%) patients. The mean skin incision was 2.72 ± 0.79 (range, 3-5) cm. The operating time ranged from 101 to 263 (mean, 156 ± 45) minutes. The volume of bleeding ranged from 5 to 60 (mean, 27 ± 19) mL. No intraoperative complications were observed in this series. Postoperatively, there was no mortality. Wound infection was observed in 1 patient. The number of harvested lymph nodes was 18 ± 2.1, and the mean tumor-free resection margin was 11 ± 4.8 cm.
  
  
  CONCLUSIONS
  Our experience indicates that single-incision laparoscopic colectomy is feasible for selected patients with colon cancer.
authors.affiliation: Department of Surgery, Juntendo Urayasu Hospital, Juntendo University, Tomioka, Urayasu, Japan. gkatsuno4596@sd5.so-net.ne.jp
authors.forename: Goutaro
authors.initials: G
authors.lastname: Katsuno
authors.forename: Masaki
authors.initials: M
authors.lastname: Fukunaga
authors.forename: Kunihiko
authors.initials: K
authors.lastname: Nagakari
authors.forename: Seichiro
authors.initials: S
authors.lastname: Yoshikawa
authors.forename: Masakazu
authors.initials: M
authors.lastname: Ouchi
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Hirasaki
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology / Q000601:surgery*; D000368:Aged; D003082:Colectomy / Q000379:methods*; D003110:Colonic Neoplasms / Q000473:pathology / Q000601:surgery*; D005260:Female; D006801:Humans; D010535:Laparoscopy / Q000379:methods*; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D012189:Retrospective Studies; D016896:Treatment Outcome; D014472:Umbilicus