title: [The efficiency and safety of laparoscopic surgery for colorectal carcinoma: a systematic review].
abstract: OBJECTIVE
  To evaluate and compare the efficiency and safety of laparoscopic surgery (LS) and open surgery (OS) in the treatment of colorectal carcinoma.
  
  
  METHODS
  Randomized controlled trials on laparoscopic surgery and open surgery for colorectal carcinoma from January 2000 to October 2010 were searched in the databases of EMbase, PubMed, Cochrane Library, Sciencedirect, Springer, VIP, CNKI, CBMdisc. The methodological quality was assessed according to the standard of Cochrane systematic review. For homogeneous studies, RevMan5.0 software was used for meta-analysis.
  
  
  RESULTS
  A total of 13 RCTs involving 4603 patients were included in this study, and among those 6 were multi-center randomized controlled trials. The meta-analysis showed that: the operation time of the LS group was longer than that of the OS group (WMD = 38.91, 95%CI: 33.89 - 43.93, P < 0.001), the blood loss (WMD = -138.14, 95%CI: -195.79 - -80.50, P < 0.001) and the length of hospital stay (WMD = 2.91, 95%CI: -4.65 - -1.17, P = 0.001) of the LS group was less than those in OS group. There was no significant differences between the two groups in the number of dissected lymph nodes (WMD = -0.62, 95%CI: -1.47 - 0.23, P = 0.150). There was no significant differences between the two groups in terms of the postoperative complications (30 days) (RR = 0.78, 95%CI: 0.59 - 1.01, P = 0.06). There was no significant differences between the two groups in 3-year overall survival (RR = 1.00, 95%CI: 0.96 - 1.04, P = 0.970). There was no significant differences between the two groups in 5-year overall survival (RR = 1.03, 95%CI: 0.99 - 1.08, P = 0.140). There was no significant differences between the two groups in 5-year overall recurrence (RR = 0.89, 95%CI: 0.74 - 1.07, P = 0.200).
  
  
  CONCLUSIONS
  Laparoscopic surgery for colorectal carcinoma is a safe and effective therapy as open surgery in the short term or long term outcomes. It could be an acceptable alternative to open surgery for colorectal carcinoma.
authors: Department of General Surgery, Zhongnan Hospital, Wuhan University, Wuhan 430071, China.
authors: Cheng
authors: C
authors: Gong
authors: Quan-yan
authors: QY
authors: Liu
authors: Jin
authors: J
authors: Zhang
authors: Hai-quan
authors: HQ
authors: Qin
authors: Wen-xin
authors: WX
authors: Tong
authors: Zhi-Su
authors: ZS
authors: Liu