• Ichiro Takemasa, Mamoru Uemura, Junichi Nishimura, Tsunekazu Mizushima, Hirofumi Yamamoto, Masataka Ikeda, Mitsugu Sekimoto, Yuichiro Doki, and Masaki Mori.
• Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan, itakemasa@gesurg.med.osaka-u.ac.jp.
• Surg Endosc. 2014 Apr 1;28(4):1110-8.

BackgroundSingle-site laparoscopic colectomy (SLC) is an emerging concept that, compared with conventional multiport laparoscopic colectomy (MLC), yields reduced postoperative pain and improved cosmesis. Complete mesocolic excision (CME) is a novel concept for colon cancer surgery that provides improved oncologic outcomes; however, there are no reports of SLC with CME. We conducted a prospective case-control study to evaluate the feasibility and safety of SLC with CME for colon cancer.MethodsProspectively collected data of patients with stage I-III colon cancer who underwent SLC (n = 150) or MLC (n = 150) between June 2008 and March 2012 were analyzed. Patients who underwent SLC were, in terms of clinical characteristics and tumor location, matched as closely as possible with those undergoing MLC. Within each group, patients were classified as having right-sided (n = 69 in each group) or left-sided (n = 81 in each group) colon cancer, and short-term outcomes were compared between the two procedures overall and per side.ResultsOverall perioperative outcomes, including operation time, blood loss, number of lymph nodes harvested, length of the resected specimen, and complications, were similar between the two procedures, whereas postoperative pain was significantly lower with SLC. Operation time for right-sided SLC was significantly shortened. SLC with CME was completed successfully in 94 % (65/69) of right-sided cases and in 88 % (71/81) of left-sided cases. Conversion rates were 1.4 % (1/69) and 1.1 % (1/81), respectively. The umbilical scars were nearly invisible 3 months after the procedure, and most patients reported being quite satisfied with the cosmetic outcomes.ConclusionsSLC with CME for colon cancer is feasible when performed by experienced surgeons in selected patients. Excellent cosmesis and reduced postoperative pain as well as oncologic clearance can be expected. A large-scale, prospective, randomized, controlled trial should be conducted to confirm the superiority of this procedure over MLC with CME.

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