Safe implementation of minimally invasive surgery in a specialized colorectal cancer unit.

Introduction: In the past 30 years, minimally invasive surgery (MIS) has made remarkable progress and has become the standard of care in colorectal cancer treatment. The implementation of new techniques or platforms is, therefore, a challenge for surgical teams. This study aims to analyze the experience in the implementation of minimally invasive surgery in the colorectal unit in a specialized colorectal cancer center. We will report and compare the clinical outcomes of the patients submitted to the different surgical approaches, reflecting the importance of surgical training in the laparoscopic and robotic field for the reduction of surgical complications and improve short-term outcomes.

Methods: This study involved a retrospective analysis of data collected from a prospectively maintained database at the colorectal unit of Champalimaud Foundation between 2012 and 2023. Data were collected as part of routine clinical documentation and included variables on patient's demographics, staging, short-term outcomes, and follow-up.

Results: A total of 661 patients treated at the Champalimaud Foundation between 2012 and 2023 were included, of which 389 (59%) had colon and 272 (41%) rectal cancer. Most of the patients underwent elective surgery, with a minimally invasive approach performed in 91% of cases. A complete resection (R0) was achieved in 95.1% (619) of the procedures with a pathology report staging 64.5% (409) of tumors as pT3-4. Eleven percent (70) of patients had complications classified as Clavien-Dindo (CD) ≥ 3.

Conclusion: This study supports the safety of the implementation of minimally invasive surgery in colorectal cancer care, with improvement in postoperative outcomes and surgical quality, supporting the importance of surgical training and specialized teams.