• Annals of surgery · Jul 2023

    Randomized Controlled Trial Multicenter Study

    Comparison of Laparoscopic versus Robot-Assisted Surgery for Rectal Cancers: The COLRAR Randomized Controlled Trial.

    • Jun Seok Park, Sung Min Lee, Gyu-Seog Choi, Soo Yeun Park, Hye Jin Kim, Seung Ho Song, Byung Soh Min, Nam Kyu Kim, Seon Hahn Kim, and Kang Young Lee.
    • Colorectal Cancer Center, Kyungpook National University Chilgok Hospital, School of Medicine, Kyungpook National University, Daegu, Republic of Korea.
    • Ann. Surg. 2023 Jul 1; 278 (1): 313831-38.

    ObjectiveTo evaluate whether robotic for middle or low rectal cancer produces an improvement in surgical outcomes compared with laparoscopic surgery in a randomized controlled trial (RCT).BackgroundThere is a lack of proven clinical benefit of robotic total mesorectal excision (TME) compared with a laparoscopic approach in the setting of multicenter RCTs.MethodsBetween July 2011 and February 2016, patients diagnosed with an adenocarcinoma located <10 cm from the anal verge and clinically rated T1-4aNxM0 were enrolled. The primary outcome was the completeness of TME assessed by a surgeon and a pathologist.ResultsThe RCT was terminated prematurely because of poor accrual of data. In all, 295 patients were assigned randomly to a robot-assisted TME group (151 in R-TME) or a laparoscopy-assisted TME group (144 in L-TME). The rates of complete TME were not different between groups (80.7% in R-TME, 77.1% in L-TME). Pathologic outcomes including the circumferential resection margin and the numbers of retrieved lymph nodes were not different between groups. In a subanalysis, the positive circumferential resection margin rate was lower in the R-TME group (0% vs 6.1% for L-TME; P =0.031). Among the recovery parameters, the length of opioid use was shorter in the R-TME group ( P =0.028). There was no difference in the postoperative complication rate between the groups (12.0% for R-TME vs 8.3% for L-TME).ConclusionsIn patients with middle or low rectal cancer, robotic-assisted surgery did not significantly improve the TME quality compared with conventional laparoscopic surgery (ClinicalTrial.gov ID: NCT01042743).Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.

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