Robotic oncologic colorectal surgery with a new robotic platform (CMR Versius): hope or hype? A preliminary experience from a full-robotic case-series.

Background: The present case-series describes the first full-robotic colorectal resections performed with the new CMR Versius platform (Cambridge Medical Robotics Surgical, 1 Evolution Business Park, Cambridge, United Kingdom) by an experienced robotic surgeon.

Methods: In a period between July 2020 and December 2020, patients aged 18 years or older, who were diagnosed with colorectal cancer and were fit for minimally invasive surgery, underwent robotic colorectal resection with CMR Versius robotic platform at "Casa di Cura Cobellis" in Vallo della Lucania,Salerno, Italy. Three right colectomies, 2 sigmoid colectomies and 1 anterior rectal resection were performed. All the procedures were planned as fully robotic. Surgical data were retrospectively reviewed from a prospectively collected database.

Results: Four patients were male and 2 patients were female with a median (range) age of 66 (47-72) years. One covering ileostomy was created. Full robotic splenic flexure mobilization was performed. No additional laparoscopic gestures or procedures were performed in this series except for clipping and stapling which were performed by the assistant surgeon due to the absence of robotic dedicated instruments. Two ileocolic anastomoses, planned as robotic-sewn, were performed extracorporeally. One Clavien-Dindo II complication occurred due to a postoperative blood transfusion. Median total operative time was 160 (145-294) min for right colectomies, 246 (191-300) min for sigmoid colectomies and 250 min for the anterior rectal resection.

Conclusions: The present series confirms the feasibility of full-robotic colorectal resections while highlighting the strengths and the limitations of the CMR Versius platform in colorectal surgery. New devices will need more clinical development to be comparable to the current standard.