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The open surgeries and more recently minimal invasive surgeries aided by laparoscopic or robotic approaches are employed for rectal cancer treatment procedures. The open approach is the most commonly opted technique, but recent studies have also shown that laparoscopic total mesorectal excision (TME) has become the standard of care. There are certain shortcomings of laparoscopic surgery such as long learning curve, inadequate counter traction, limited dexterity, lack of tactile feedback and limited two-dimensional visions. Robotic surgery also offers several benefits to overcome the drawbacks of laparoscopic procedures, such as providing better dexterity and a more stable visualization . This study aims to analyse the surgical results in terms of completion of TME, short-term surgical outcomes and hospital stay in after open, laparoscopic- and robotic-assisted rectal resections respectively. A retrospective review of prospectively maintained database of patients operated for carcinoma rectum between January 2013 and August 2018 at Manipal Comprehensive Cancer Centre, Manipal-Vattikuti Institute of Robotic Surgery, Bangalore, was analysed in this study. The surgical parameters like completion of total mesorectal excision; proximal, distal and circumferential resection margins; number of nodes retrieved; and total post operative hospital stay were analysed in the open, laparoscopic-assisted and robotic-assisted groups. A total of 100 patients were included in the study consisting of 25, 25 and 50 patients each in the open, laparoscopic and robotic arms respectively. In case the desired results were not obtained using the advanced technique the procedure was converted and open technique was adopted. The conversion rate to open procedure was 8% (2of 25) in the laparoscopic-assisted group and 2% (1/50) in the robotic-assisted group. The average post operative hospital stay was 7.4, 7.36 and 6 days in the open, laparoscopic- and robotic-assisted group ( p  = 0.01) respectively. Robotic rectal resections show a trend towards better surgical results in the form of improved circumferential resection margins, completeness of TME and lower conversion rates.

indian journal of surgical oncology

Comparative Evaluation of the Short-Term Treatment Outcomes Between Open, Laparoscopic- and Robotic-Assisted Surgical Approaches for Rectal Cancer Treatment