Robotic vs Laparoscopic Cranial-Approach CME for Right Hemicolectomy: Retrospective Study

Overview

This retrospective cohort study compared perioperative outcomes of robotic (R-CME) and laparoscopic (L-CME) complete mesocolic excision with central vascular ligation for right-sided colon cancer using propensity score matching. The analysis demonstrated the feasibility and safety of the robotic cranial approach, highlighting its potential advantages in complex right hemicolectomy procedures.

Background

Complete mesocolic excision (CME) with central vascular ligation (CVL) improves disease-free survival in right-sided colon cancer by adhering to embryological planes and central vessel ligation. While laparoscopic CME offers better short-term recovery, it is technically challenging due to complex vascular anatomy. Robotic surgery provides enhanced vision and instrument dexterity, potentially overcoming laparoscopic limitations, especially in complex procedures like CME. The cranial approach to right hemicolectomy, though less commonly reported, may reduce intraoperative organ damage and facilitate dissection.

Data Highlights

The study included 80 patients matched by propensity scores (40 robotic CME, 40 laparoscopic CME) for stage I–III right-sided colon cancer. Key perioperative parameters such as operative time, blood loss, conversion rates, postoperative complications, and length of hospital stay were analyzed to assess feasibility and safety.

Key Findings

• Robotic CME with the cranial approach was feasible and safe for right-sided colon cancer surgery.
• Propensity score matching balanced baseline characteristics including age, sex, BMI, ASA-PS, tumor location, and TNM stage.
• Robotic surgery utilized the da Vinci Xi system with a Pfannenstiel incision and specific port placement to optimize instrument reach and reduce arm collisions.
• Both groups underwent D3 lymphadenectomy with dissection along the superior mesenteric vessels, preserving right gastroepiploic vessels when possible.
• The robotic approach potentially offers advantages in complex dissection and ergonomics compared to laparoscopic CME.

Clinical Implications

Robotic CME via the cranial approach represents a viable minimally invasive option for right hemicolectomy with CME, potentially improving surgical precision and safety in complex anatomical regions. Surgeons should consider robotic systems for challenging right colon cancer resections, especially when enhanced visualization and instrument maneuverability are required.

Conclusion

Robotic cranial-approach CME for right-sided colon cancer is a feasible and safe alternative to laparoscopic CME, with potential technical advantages that may benefit complex resections. Further prospective studies are warranted to confirm long-term oncological outcomes.

References

1. Hohenberger et al. 2009 -- Complete mesocolic excision with central vascular ligation
2. Bertelsen et al. 2015 -- Improved disease-free survival with CME
3. European Association of Endoscopic Surgery (EAES) Consensus 2004 -- Medial-to-lateral approach recommendation
4. Recent robotic colorectal surgery studies 2018-2023 -- Robotic vs laparoscopic approaches