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Related Experiment Videos

Thyroid evaluation in patients with primary hyperparathyroidism.

Toshihiro Masatsugu1, Hiroyuki Yamashita, Shiro Noguchi

  • 1Noguchi Thyroid Clinic and Hospital Foundation, Beppu, Oita, Japan.

Endocrine Journal
|May 3, 2005
PubMed
Summary
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High-resolution ultrasonography (US) effectively diagnoses thyroid disease in primary hyperparathyroidism (pHPT) patients. Combined US and ultrasound-guided fine-needle aspiration biopsy (US-FNAB) accurately predicts malignancy, aiding surgical management.

Area of Science:

  • Endocrinology
  • Surgical Oncology
  • Radiology

Background:

  • Primary hyperparathyroidism (pHPT) management can be complicated by concomitant thyroid disease.
  • Preoperative assessment of thyroid status is crucial for surgical planning in pHPT patients.

Purpose of the Study:

  • To evaluate the diagnostic efficacy of high-resolution ultrasonography (US) for concomitant thyroid disease in patients with primary hyperparathyroidism (pHPT).
  • To assess the accuracy of US and ultrasound-guided fine-needle aspiration biopsy (US-FNAB) in diagnosing thyroid nodules and predicting malignancy, impacting surgical decisions.

Main Methods:

  • One hundred and nine sporadic pHPT patients underwent preoperative high-resolution US, with some receiving US-FNAB.
  • Diagnostic accuracy, sensitivity, and specificity of US and US-FNAB were compared against histopathological findings for 72 thyroid nodules.

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  • Analysis included evaluation of nodule size impact on US-FNAB accuracy and detection of non-palpable thyroid cancers.

    • Main Results:

    • Combined US and US-FNAB achieved 95.7% sensitivity, 91.8% specificity, and 93.1% accuracy in diagnosing thyroid nodules.
    • US alone demonstrated 91.3% sensitivity, 91.8% specificity, and 91.7% accuracy.
    • US-FNAB showed lower diagnostic performance for smaller nodules (5-9 mm) compared to larger ones (≥10 mm).
    • Eight non-palpable thyroid cancers were accurately diagnosed by combined US and US-FNAB, with four found incidentally.

    Conclusions:

    • Preoperative high-resolution ultrasonography is a valuable tool for evaluating concomitant thyroid disease in pHPT patients.
    • The combined approach of US and US-FNAB significantly improves the prediction of thyroid malignancy, guiding surgical management.
    • Accurate preoperative diagnosis of thyroid nodules, including non-palpable cancers, is essential for optimal surgical outcomes in pHPT.