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Thyroid nodules in Graves' disease: classification, characterization, and response to treatment
1Department of Medicine, University of Maryland School of Medicine, Baltimore, USA.
Thyroid : Official Journal of the American Thyroid Association
|August 26, 1998
Summary
Thyroid nodules are common in Graves' disease patients, but most are benign. Malignancy risk is higher in solitary cold nodules, necessitating careful re-examination if they persist after treatment.
Area of Science:
- Endocrinology
- Oncology
- Pathology
Background:
- Thyroid nodules are frequently observed in patients with Graves' disease.
- Distinguishing nodules from coexistent thyroid malignancy is crucial for effective management.
- Alternative etiologies for nodules in Graves' disease are more common than malignancy.
Purpose of the Study:
- To characterize thyroid nodules in Graves' disease patients.
- To evaluate nodule response to various treatments.
- To stratify the risk of thyroid malignancy in this population.
Main Methods:
- Retrospective single-center study of 468 Graves' disease patients (ages 12-75).
- Patients received radioiodine, near-total thyroidectomy, thionamide antithyroid drugs, or observation.
- Nodules were classified, and malignancy risk was assessed based on treatment response and pathology.
Main Results:
- 12.8% of patients had nodules, with most being benign expressions of autoimmune disease or nodular goiter.
- Thyroid cancer was found in 1.3% of all patients (10% of nodule patients).
- Solitary cold nodules showed a higher malignancy risk (19% of palpable solitary cold nodules).
Conclusions:
- Graves' disease patients commonly develop nodules, predominantly benign.
- Fine-needle aspiration biopsy (FNAB) is key; benign cytology supports nonsurgical therapy.
- Persistent or developing solitary cold nodules require vigilant re-evaluation due to elevated malignancy risk.