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Related Experiment Videos

Thyroid nodules associated with Hashimoto thyroiditis: assessment with US.

S Takashima1, F Matsuzuka, T Nagareda

  • 1Department of Radiology, Osaka University Medical School, Japan.

Radiology
|October 1, 1992
PubMed
Summary
This summary is machine-generated.

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Ultrasound-guided fine-needle aspiration (FNA) accurately diagnoses thyroid nodules in Hashimoto thyroiditis patients. This method helps distinguish benign from malignant conditions, guiding surgical decisions and avoiding unnecessary procedures.

Area of Science:

  • Endocrinology
  • Oncology
  • Radiology

Background:

  • Hashimoto thyroiditis is an autoimmune condition frequently associated with thyroid nodules.
  • Differentiating benign from malignant thyroid nodules in this context can be challenging.
  • Accurate diagnosis is crucial for appropriate patient management and surgical intervention.

Purpose of the Study:

  • To evaluate the diagnostic accuracy of ultrasound (US)-guided fine-needle aspiration (FNA) for thyroid nodules in patients with Hashimoto thyroiditis.
  • To compare US-guided FNA with palpation-guided FNA and diagnostic US followed by surgery.
  • To assess the sonographic features associated with malignancy in these nodules.

Main Methods:

  • Retrospective analysis of sonographic findings in 109 thyroid nodules from 104 patients with Hashimoto thyroiditis.

Related Experiment Videos

  • Review of procedures including US-guided FNA, palpation-guided FNA, and diagnostic US with surgical correlation.
  • Correlation of nodule echogenicity and palpability with histopathologic diagnosis.

    • Main Results:

    • US-guided FNA demonstrated 100% sensitivity in differentiating benign (11 nodules) from malignant (16 nodules) diseases.
    • Palpation-guided FNA yielded two false diagnoses of Hashimoto thyroiditis for papillary carcinomas.
    • Eight non-palpable malignancies were correctly diagnosed using US-guided FNA. Hyperechoic nodules were typically benign, while hypoechoic nodules were more frequently malignant. Lymphoma was indistinguishable from pseudotumor on US.

    Conclusions:

    • US-guided FNA is a valuable tool for accurate histologic diagnosis of thyroid nodules in patients with Hashimoto thyroiditis.
    • This technique aids in selecting patients who require surgery, thereby preventing unnecessary procedures for non-neoplastic conditions.
    • Sonographic features like echogenicity can provide clues to nodule characterization, but US-guided FNA remains essential for definitive diagnosis.