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Objective  To date, well-designed randomized controlled trials examining the safety, efficacy, and long-term outcomes of single-incision laparoscopic surgery (SILS) for colorectal cancer are scarce. The aim of the current study was to compare short-term outcomes of SILS for colorectal cancer with conventional laparoscopic surgery (CLS).    Methods  Between June 28, 2017, and June 29, 2019, a single-center, open-label, non-inferiority, randomized clinical trial was conducted at the Department of General Surgery, Ruijin Hospital (North), Shanghai Jiaotong University School of Medicine in Shanghai, China. In total, 200 patients diagnosed or suspected of colorectal cancer (cT 1–4a N 0–2 M 0 ) were randomly assigned to either the SILS or CLS group in a 1:1 ratio. The primary outcome was early morbidity rate. Secondary outcomes included intraoperative outcomes, pain intensity, postoperative recovery, pathologic outcomes, and long-term outcomes.    Results  In total, 193 participants (SILS, 97; CLS, 96) were analyzed in the modified intention-to-treat (MITT) population. Among them, 48 underwent right hemicolectomy (SILS  n  = 23, 23.7% and MLS  n  = 25, 26%), 15 underwent left hemicolectomy (SILS  n  = 6, 6.2% and MLS  n  = 9, 9.4%), 1 underwent transverse colectomy (MLS  n  = 1, 1%), 57 underwent sigmoidectomy (SILS  n  = 32, 33% and MLS  n  = 25, 26%), and 72 underwent anterior resection (SILS  n  = 36, 37.1% and MLS  n  = 36, 37.5%). No significant differences were observed in the baseline characteristics. The intraoperative complication was comparable between the two groups [5 (5.2%) vs. 4 (4.2%); difference, 1%; 95% CI, −5.8% to 7.8%;  p  > 0.999) and so was postoperative complication rates [10 (10.3%) vs. 14 (14.6%); difference, −4.3%; 95% CI, −13.9% to 5.3%;  p  = 0.392]. The SILS group showed shorter incision length [median (IQR), 4 (3.5–5) vs. 6.6 (6–7.5),  p  < 0.001] and lower VAS scores on the first [median (IQR), 4 (3–5) vs. 4 (4–5),  p  = 0.002] and the second day [median (IQR), 2 (1.5–3) vs. 3 (2–4),  p  < 0.001] after surgery. No statistically significant difference was found in other measured outcomes.    Conclusions  Compared with CLS, SILS performed by experienced surgeons for selected colorectal cancer patients is non-inferior with good short-term safety and has the advantage of reducing postoperative pain.    Clinical Trial Registration    ClinicalTrials.gov , identifier NCT03151733.

frontiers in oncology

Short-Term Outcomes of Single-Incision Laparoscopic Surgery for Colorectal Cancer: A Single-Center, Open-Label, Non-Inferiority, Randomized Clinical Trial