Optimizing Right Colon Cancer Mobilization via Duodenum-First Multidirectional Laparoscopy

Overview

This study evaluates the feasibility and safety of a duodenum-first multidirectional approach (DMA) for laparoscopic right-sided colon cancer surgery compared to the conventional medial approach. The DMA technique demonstrated improved surgical field optimization and potentially reduced operative complexity.

Background

Complete mesocolic excision (CME) with central vessel ligation (CVL) is critical for reducing local recurrence in colon cancer surgery. Various laparoscopic right colectomy approaches exist, including medial-to-lateral, lateral-to-medial, cranial-to-caudal, and retroperitoneal, each with unique technical challenges. The medial-to-lateral approach is standard but complex due to anatomical variations near the pancreas. A reproducible, safe laparoscopic technique that optimizes the surgical field is needed to improve outcomes.

Data Highlights

Key Findings

• The duodenum-first multidirectional approach (DMA) begins dissection by incising the peritoneum along the mesenteric root above the horizontal duodenum, facilitating a wide surgical field.
• DMA allows dissection above the ventral layer of the duodenum and pancreas, maintaining an optimal plane above Gerota’s fascia and retroperitoneum.
• Assistant retraction in DMA involves grasping the mesentery like a fan and using gauze to gently lift the small bowel mesentery, improving visualization and reducing injury risk.
• Leaving the lateral attachment of the cecum partially affixed maintains the original position of ileocecal vessels before central vessel ligation, preventing vessel distortion.
• DMA combines advantages of previous approaches, potentially simplifying the complex anatomy around the pancreas and improving reproducibility.

Clinical Implications

The DMA technique offers a safe and reproducible method for laparoscopic right colectomy that may reduce technical difficulty by optimizing the surgical field and maintaining critical anatomical landmarks. Surgeons may consider adopting DMA to improve operative efficiency and oncological safety in right-sided colon cancer resections.

Conclusion

The duodenum-first multidirectional approach represents a promising advancement in laparoscopic right colectomy, combining the benefits of multiple dissection strategies to enhance surgical field exposure and procedural safety. Further studies may validate its impact on long-term oncological outcomes.

References

1. Japanese Guidelines for the Treatment of Colorectal Cancer, 2019 -- Lymph node dissection recommendations
2. Clavien–Dindo Classification, 2004 -- Surgical Complication Grading
3. Previous studies on laparoscopic right colectomy with CME and CVL