Mesenteric root dissection with individualized ileo-colic vessel ligation versus mesenteric pedicle stapling

Area of Science:

• Surgical Oncology
• Minimally Invasive Surgery
• Gastrointestinal Surgery

Background:

• Factors influencing lymph node yield in laparoscopic colectomy are crucial for accurate cancer staging.
• This study specifically investigated two vascular pedicle ligation techniques during laparoscopic right hemicolectomy for cancer.

Purpose of the Study:

• To compare the impact of mesenteric root dissection with individualized vessel ligation versus en bloc vascular root stapling on lymph node retrieval.
• To identify factors affecting lymph node yield in laparoscopic right hemicolectomy for cancer.

Main Methods:

• Retrospective analysis of patient charts, operative, and pathological reports from a single department.
• Inclusion criteria: elective laparoscopic right hemicolectomy for cancer.
• Variables studied: vascular transection method, age, gender, node status, T stage, BMI, and surgeon experience.

Main Results:

• No significant difference in the mean number of retrieved lymph nodes between individualized vessel ligation (18.7 ± 5.9) and vascular root stapling (19.6 ± 7.9).
• Similar rates of achieving 12 or more lymph nodes (97.1% vs. 92.7%).
• Body Mass Index (BMI) > 30 was significantly associated with a decreased number of retrieved lymph nodes (P=0.001).

Conclusions:

• Both ileo-colic vascular root dissection with individual vessel ligation and vascular root stapling yield comparable lymph node counts in laparoscopic right hemicolectomy for cancer.
• High BMI is a significant factor associated with reduced lymph node retrieval.
• Standardizing the level of mesenteric root transection ensures adequate lymph node harvesting irrespective of the ligation technique.