Comparison of High and Low Ligation Techniques of the Inferior Mesenteric Artery

Overview

This study compares the effects of left colic artery (LCA) preservation during inferior mesenteric artery ligation on postoperative anastomotic leakage in low rectal cancer patients.

Background

Anastomotic leakage is a significant complication following rectal cancer surgery, impacting patient outcomes. The decision to preserve the left colic artery during transanal total mesorectal excision (TaTME) remains contentious, with implications for blood supply to the anastomosis. Understanding the effects of different ligation techniques on leakage rates is crucial for optimizing surgical approaches in low rectal cancer.

Data Highlights

Key Findings

• The incidence of postoperative leakage was significantly lower in the LCA preservation group (4.3%) compared to the non-preservation group (13.2%).
• Among patients who received neoadjuvant therapy, LCA preservation was associated with a lower leakage rate (7.0% vs. 24.0%).
• The study involved a retrospective review of 182 patients with low rectal cancer.
• Propensity score matching was used to assign patients to LCA preservation or non-preservation groups.

Clinical Implications

Surgeons may consider LCA preservation during TaTME for low rectal cancer to potentially reduce the risk of anastomotic leakage, particularly in patients undergoing neoadjuvant therapy. Individualized assessment of each patient's anatomical and pathological characteristics remains essential.

Conclusion

The study highlights the potential benefits of LCA preservation in reducing anastomotic leakage in low rectal cancer surgery, warranting further investigation in larger cohorts.

Related Resources & Content

1. First Affiliated Hospital of Chongqing Medical University, 2024 -- Comparison of High and Low Ligation Techniques of the Inferior Mesenteric Artery
2. conexiant, 2026 -- Low IMA Ligation Did Not Significantly Reduce Leaks
3. Springer, 2009 -- Anatomical Analysis of Arterial Ligation Levels in Total Mesorectal Excision (TME)
4. Springer, 2011 -- Comparison of Anastomotic Perfusion in High Tie versus Low Tie Techniques for Rectal Surgery
5. PubMed, 2025 -- EAES, ESCP, and ESGAR clinical practice guideline update on taTME for rectal cancer
6. JAMA Surgery, 2026 -- Inferior Mesenteric Artery Ligation Level and Anastomotic Leakage in Low Anterior Resection: A Randomized Clinical Trial
7. Techniques in Coloproctology — Transanal Surgical Approach for Managing Anastomotic Leakage Following Low Anterior Resection in Rectal Cancer: A Prospective Study
8. EAES, ESCP, and ESGAR clinical practice guideline update on taTME for rectal cancer - PubMed
9. Inferior Mesenteric Artery Ligation Level and Anastomotic Leakage in Low Anterior Resection: A Randomized Clinical Trial | Trials | JAMA Surgery | JAMA Network