Role of Robotic Natural Orifice Specimen Extraction Surgery in Colorectal Neoplasms

To explore the safety and feasibility of robotic natural orifice specimen extraction surgery(NOSES) for colorectal neoplasms. All patients underwent robotic NOSES from March 2016 to October 2019 in our hospital were enrolled for retrospective analysis. Clinicopathological data were collected and analyzed. A total of 180 patients were enrolled. The average distance from the lower edge of the tumor to the anus was (8.64 ± 3.64) cm and Maximum circumferential diameter (CDmax) of specimen was (3.5 ± 1.6) cm. In terms of safety, the average operation time, intraoperative blood loss, and postoperative hospital stay were (187.5 ± 78.3) min, (47.4 ± 34) mL, and (11.3 ± 7.5) days, respectively. In terms of feasibility, the average number of lymph node harvested was (14.8 ± 5). Notably, a close distance from the lower edge of the tumor to the anus with long operation time and postoperative hospital stay indicates high incidence of anastomotic leakage. In addition, either received nRCT has no effect on perioperative safety. Robotic NOSES shows advantages in terms of safety and feasibility compared with laparoscopic NOSES. This procedure could not only be a safe procedure but also could achieve good oncological outcomes.