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Updated: Oct 24, 2025

The Role of Anatomical Dissection in Defining Colic and Small Bowel Artery Lymphovascular Bundles in the D3 Volume of Small and Large Bowel Mesentery
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The Role of Anatomical Dissection in Defining Colic and Small Bowel Artery Lymphovascular Bundles in the D3 Volume of Small and Large Bowel Mesentery

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A Study of the Right Colonic Vascular Anatomy: Correlations between Veins and Arteries

Nao Obara1, Shigeki Yamaguchi1, Yoshitaka Okada2

  • 1Department of Gastroenterological Surgery, Saitama Medical University International Medical Center, Hidaka, Japan.

Journal of the Anus, Rectum and Colon
|August 16, 2021
PubMed

Insights

High-resolution CT scans reveal that the right branch of the middle colic artery (MCA) most frequently supplies the accessory right colic vein (ARCV) in right colon cancer surgery. Understanding this vascular anatomy is crucial for surgical planning.

Area of Science:

  • Vascular anatomy
  • Surgical oncology
  • Radiology

Background:

  • Limited understanding of right colon vascular anatomy.
  • Importance of vascular variations in surgical procedures.
  • Need for detailed anatomical studies using advanced imaging.

Purpose of the Study:

  • To elucidate the vascular anatomy of the right colon, focusing on Henle's gastrocolic trunk (GCT).
  • To review terminology for right colon arteries and veins.
  • To utilize high-resolution CT scans for detailed anatomical assessment.

Main Methods:

  • Retrospective analysis of 165 patients undergoing laparoscopic colectomy for right colon cancer.
  • Examination of preoperative CT scans.
  • Creation of multiplanar reformation and volume rendering images.

Main Results:

  • In 139 patients with GCT, the accessory right colic vein (ARCV) was most commonly accompanied by the right branch of the middle colic artery (MCA) (71.2%).
  • In 26 patients without GCT, the right colic vein (RCV) was present in 15, with the MCA's right branch being the most common accompanying artery (66.6%).
  • Approximately 70% of drainage veins from the right colon were accompanied by the MCA's right branch, regardless of GCT presence.

Conclusions:

  • The right branch of the MCA is the predominant artery associated with right colon veins.
  • Preoperative consideration of vascular branching patterns is recommended for surgical management of right colon cancer.
  • Detailed vascular anatomical knowledge aids in optimizing surgical approaches.
Abstract

Keywords:
arteryright colonvein

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