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Detailed Structure and Function of Lymph Nodes01:23

Detailed Structure and Function of Lymph Nodes

Lymph nodes are bean-shaped structures that cluster along the lymphatic vessels in the inguinal, axillary, and cervical regions. Each node is divided into compartments by a capsule that extends trabeculae inward.
From a histological perspective, lymph nodes can be split into two main areas: the superficial cortex and the deep medulla. The outer cortex is populated by dendritic cells, macrophages, and B lymphocytes, which are densely packed into follicles. When these B-lymphocytes are presented...

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Transoral Robotic Total Thyroidectomy and Bilateral Central Regional Lymph Node Dissection for Papillary Thyroid Carcinoma
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Transoral Robotic Total Thyroidectomy and Bilateral Central Regional Lymph Node Dissection for Papillary Thyroid Carcinoma

Published on: September 15, 2023

Lymph node management in clinically node-negative patients with papillary thyroid carcinoma.

S Vergez1, J Sarini, J Percodani

  • 1Department of Head and Neck Surgery, University Hospital Rangueil-Larrey, Toulouse, France. vergez.s@chu-toulouse.fr

European Journal of Surgical Oncology : the Journal of the European Society of Surgical Oncology and the British Association of Surgical Oncology
|June 30, 2010
PubMed
Summary

Systematic central neck dissection (CND) is recommended for papillary thyroid carcinoma (PTC) patients, as lateral neck dissection is only advised for those with suspected lymph node metastases (LNM). This approach aids in detecting small LNM in the central neck.

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Area of Science:

  • Oncology
  • Surgical Pathology
  • Head and Neck Surgery

Background:

  • The role of systematic lymph node dissection in papillary thyroid carcinoma (PTC) management is debated.
  • Accurate preoperative assessment of lymph node metastasis (LNM) in clinically node-negative PTC patients is challenging due to small LNM size.

Purpose of the Study:

  • To investigate the lymph node spread patterns in clinically node-negative PTC patients.
  • To propose an evidence-based lymph node management strategy for PTC.

Main Methods:

  • Retrospective review of 90 PTC patients undergoing total thyroidectomy with central neck dissection (CND) and lateral neck dissection.
  • Inclusion criteria: clinically node-negative status based on preoperative palpation and ultrasonography.

Main Results:

  • Lymph node metastasis (LNM) was detected in 45.5% of patients.
  • Central and lateral compartment involvement occurred in 31% of cases.
  • Patients without central compartment LNM were also negative in the lateral compartment; LNM in the central compartment were often small (≤5mm), impacting preoperative detection accuracy.

Conclusions:

  • Central neck dissection (CND) is valuable for preoperative or intraoperative PTC staging.
  • Lateral neck dissection should be reserved for cases with suspected or confirmed LNM.
  • Systematic CND provides objective lymph node status evaluation, crucial for managing small, difficult-to-detect LNM in PTC.