title: A meta-analysis of the short- and long-term results of randomized controlled trials that compared laparoscopy-assisted and conventional open surgery for colorectal cancer.
abstract: OBJECTIVE
  We conducted a meta-analysis to evaluate and compare the short- and long-term results of laparoscopic colorectal surgery (LCRS) and conventional open surgery (OCRS) for colorectal cancer (CRC).
  
  
  METHODS
  We searched relevant papers published between January 1990 and May 2011. We analyzed the outcomes of each type of surgery over the short- and long-term periods.
  
  
  RESULTS
  In the short-term period, we found no significant differences in overall perioperative complications and anastomotic leakage between LCRS and OCRS groups. We found no significant differences in overall, distant, local and wound-site recurrence, overall mortality, 3 and 5 year disease-free survival rate, and cancer-related mortality between the 2 groups.
  
  
  CONCLUSIONS
  LCRS has the benefits of reducing intraoperative blood loss, earlier resumption of oral intake, and shorter duration of hospital stay in the short-term. The long-term outcomes of LCRS seem to be similar to those of OCRS.
authors.affiliation: 1. Department of Surgery, Osaka City Sumiyoshi Hospital.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Ohtani
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Tamamori
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Arimoto
authors.forename: Yukio
authors.initials: Y
authors.lastname: Nishiguchi
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Maeda
authors.forename: Kosei
authors.initials: K
authors.lastname: Hirakawa