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Related Experiment Video

Updated: Feb 11, 2026

Intravital Microscopy of the Inguinal Lymph Node
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Omental Vascularized Lymph Node Flap: A Radiographic Analysis.

Julia A Cook1, Sarah E Sasor1, Sunil S Tholpady1,2

  • 1Division of Plastic and Reconstructive Surgery, Department of Surgery, Indiana University School of Medicine, Indianapolis, Indiana.

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Summary

The omentum provides a reliable donor site for lymph node transfer in lymphedema treatment. Its anatomy, particularly the right gastroepiploic artery, is well-defined, aiding surgical planning.

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Area of Science:

  • Anatomy
  • Vascular Surgery
  • Lymphedema Treatment

Background:

  • Vascularized lymph node transfer is a growing treatment for lymphedema.
  • The omentum is a suitable donor site due to abundant tissue and lymph nodes, avoiding iatrogenic lymphedema.

Purpose of the Study:

  • To anatomically define the omental flap for vascularized lymph node harvest.
  • To provide data for preoperative planning of omental flap lymph node transfer.

Main Methods:

  • Computed tomography angiography (CTA) of 156 patients was reviewed.
  • Right gastroepiploic artery (RGEA) length, caliber, and lymph node characteristics were measured.
  • Lymph node clusters were mapped in 3D along the RGEA.

Main Results:

  • RGEA caliber was larger in males; lymph node size was also significantly larger in males.
  • An average of 3.1 lymph nodes were identified per patient, with no gender difference in number.
  • Three distinct RGEA anatomical variations showed unique lymph node clustering patterns.

Conclusions:

  • The omentum offers a consistent and reliable anatomical basis for lymph node donation.
  • This anatomical study aids in the preoperative planning of omental flap vascularized lymph node transfer.