Related Experiment Video
Updated: May 29, 2026
Robot-assisted Total Mesorectal Excision and Lateral Pelvic Lymph Node Dissection for Locally Advanced Middle-low Rectal Cancer
Published on: February 12, 2022
Robotic cylindrical abdominoperineal resection with transabdominal levator transection
Slawomir J Marecik1, Marek Zawadzki, Ashwin L Desouza
1Division of Colon and Rectal Surgery, University of Illinois at Chicago Medical Center, Chicago, Illinois 60612, USA.
Purpose:
The extralevator approach to abdominoperineal resection is an emerging surgical option for patients with low rectal cancer. This technique involves a wide excision of the levator muscles that could reduce the high incidence of circumferential margin positivity associated with conventional abdominoperineal resections. We present our technique of robotic cylindrical abdominoperineal resection where the daVinci robot is used to perform a controlled transection of the levator muscles transabdominally under direct visualization.
Methods:
Five patients with rectal adenocarcinoma within 5 cm of the anal verge underwent robot-assisted cylindrical abdominoperineal resection. Safety, feasibility, immediate postoperative outcomes, and pathological adequacy of the specimen were assessed.
Results:
The procedure was successfully completed in all 5 patients without any intraoperative complications, robot-associated morbidity, or conversion to the open approach. The mean operative time and length of hospital stay were 343 minutes and 5.8 days. An intact mesorectal envelope and negative circumferential margin was achieved in all cases. All specimens had a cylindrical shape.
Conclusions:
Robotic assistance enables the transabdominal transection of the levator muscles in cylindrical abdominoperineal resection, with acceptable perioperative and pathological outcomes. Further studies are essential to objectively define the safety, efficacy, and long-term results of this new technique.