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Related Concept Videos

Lymphatic Vessels and Lymph Transport01:16

Lymphatic Vessels and Lymph Transport

Lymphatic vessels, known as lymphatics, are crucial in transporting lymph from peripheral tissues to our venous system. This process begins with lymph entering through tiny capillaries that branch through tissues. These capillaries have unique features such as larger diameters, thinner walls, and a distinctive one-way valve system formed by overlapping endothelial cells.
This one-way system allows fluids, solutes, and even pathogens to enter but prevents their return to the intercellular spaces.

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Transoral Endoscopic Thyroidectomy Vestibular Approach for Thyroid Lobectomy
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Thyroid lymphosonography: a novel method for evaluating lymphatic drainage.

Joseph M Curry1, Waleed H Ezzat, Daniel A Merton

  • 1Department of Otolaryngology-Head and Neck Surgery, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, USA.

The Annals of Otology, Rhinology, and Laryngology
|October 9, 2009
PubMed
Summary
This summary is machine-generated.

Lymphosonography, a novel ultrasound technique, successfully identified sentinel lymph nodes (SLNs) in a swine thyroid model. This method shows promise for mapping thyroid lymphatic drainage in future human studies.

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Area of Science:

  • Surgical Oncology
  • Diagnostic Imaging
  • Veterinary Medicine

Background:

  • Sentinel lymph node (SLN) biopsy is crucial for staging various cancers.
  • Understanding thyroid gland lymphatic drainage is essential for accurate SLN mapping.

Purpose of the Study:

  • To evaluate lymphosonography, using contrast-enhanced ultrasonography (US), for demonstrating thyroid gland lymphatic drainage.
  • To assess the feasibility of US-guided SLN detection in the thyroid.

Main Methods:

  • A prospective animal study involving four Yorkshire swine.
  • Transcutaneous injection of US contrast agent and methylene blue dye into the thyroid gland.
  • Identification of lymphatic channels and SLNs using contrast-enhanced US, followed by sentinel node biopsy and dissection.

Main Results:

  • A US contrast-positive and blue dye-positive SLN was identified in 3 out of 4 swine.
  • SLNs were located in level IV in two cases and the superior mediastinum in one case.
  • One instance showed a lymphatic channel to the mediastinum, but the SLN was not visualized.

Conclusions:

  • Lymphosonography is technically feasible for mapping thyroid lymphatic drainage in a porcine model.
  • The technique correlates well with blue dye-guided SLN biopsy.
  • Further application in humans could allow detailed analysis of thyroidal lymphatic pathways.