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Neck lymph nodes in chronic autoimmune thyroiditis: the sonographic pattern.

Davide Brancato1, Roberto Citarrella, Pierina Richiusa

  • 1Department of Internal Medicine, Hospital of Partinico, Palermo, Italy. davide.brancato@libero.it

Thyroid : Official Journal of the American Thyroid Association
|September 6, 2012
PubMed
Summary
This summary is machine-generated.

Chronic autoimmune thyroiditis (CAT) is associated with an increased number of benign hyperplastic neck nodes, particularly in levels II-IV. This finding provides a characteristic sonographic pattern for CAT diagnosis.

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Area of Science:

  • Endocrinology
  • Radiology
  • Immunology

Background:

  • Neck lymph node involvement is implicated in the pathogenesis of chronic autoimmune thyroiditis (CAT).
  • Sonographic features of cervical lymph nodes require identification for their applicability in CAT patients versus healthy controls.

Purpose of the Study:

  • To systematically describe the sonographic pattern of cervical lymph nodes in patients with CAT.
  • To compare sonographic features of neck lymph nodes between CAT patients and healthy controls.

Main Methods:

  • Recruited 106 CAT patients and 70 healthy controls.
  • Performed laboratory tests including TSH, anti-TPO, and anti-Tg antibodies.
  • Conducted ultrasonography to evaluate thyroid function, autoimmunity, morphology, and neck node characteristics (number, distribution, size, hilus presence).

Main Results:

  • CAT patients had a significantly higher total number of neck nodes >10 mm (3.7 vs. 0.8; p<0.001), especially in levels II-IV.
  • More nodes with a hilus were observed in the CAT group (2.8 vs. 0.7; p<0.001).
  • Increased short-axis diameter of level III (4.4 vs. 3.7 mm; p=0.002) and level IV nodes (3.9 vs. 3.1 mm; p=0.030) was noted in CAT patients.

Conclusions:

  • This study provides the first systematic description of cervical lymph node sonographic patterns in CAT.
  • An elevated count of benign hyperplastic neck nodes, particularly in levels II-IV, is a characteristic sonographic finding in CAT.