Clinical Report: Mixed vs Medial Approach in Laparoscopic Right Hemicolectomy

Overview

This retrospective study compared 3-year disease-free survival (DFS) and overall survival (OS) between mixed and medial surgical approaches in laparoscopic right hemicolectomy for right colon cancer. No significant differences were observed in DFS or OS between the two groups, suggesting comparable long-term oncological outcomes.

Background

Colorectal cancer is a leading cause of cancer morbidity and mortality worldwide, with surgery being the primary curative treatment. The medial approach is a standardized technique for laparoscopic right hemicolectomy emphasizing early vessel ligation following the “no-touch” principle. The mixed approach combines techniques to address anatomical challenges but delays vessel ligation, raising concerns about oncological safety. This study evaluates whether the mixed approach compromises long-term survival compared to the medial approach.

Data Highlights

Key Findings

• No significant difference in baseline characteristics between medial and mixed approach groups.
• 3-year DFS rates were similar between medial and mixed approaches (HR=1.799, p>0.05).
• 3-year OS rates showed no significant difference between groups (HR=1.274, p>0.05).
• Multivariate analysis identified tumor location and chemotherapy completion as independent prognostic factors for DFS.
• The mixed approach did not compromise oncological outcomes despite delayed vessel ligation.

Clinical Implications

Both medial and mixed surgical approaches offer comparable 3-year DFS and OS outcomes in laparoscopic right hemicolectomy for right colon cancer. The mixed approach may be considered a safe and effective alternative, especially in cases with complex anatomy where the medial approach is challenging. Surgeons should continue to prioritize completion of adjuvant chemotherapy and consider tumor location when assessing prognosis.

Conclusion

The mixed surgical approach demonstrates non-inferior long-term oncological outcomes compared to the medial approach in laparoscopic right hemicolectomy. It represents a viable alternative technique without compromising 3-year survival rates.

References

1. GLOBOCAN 2020 -- Global Cancer Statistics
2. National Cancer Statistics China -- Recent Epidemiology
3. Complete Mesocolic Excision Concept -- Surgical Boundaries
4. Laparoscopic Surgery Efficacy -- Clinical Evidence
5. Medial Approach Technique -- Surgical Description
6. Previous Study by Authors (2023) -- Short-term Outcomes of Mixed Approach