Subacute thyroiditis
Subacute lymphocytic thyroiditis
Updated: 01/25/2023
© Jun Wang, MD, PhD
General features
- Transient, painless hyperthyroidism
- Relatively uncommon, usually women
- Unknown etiology
- Spontaneously resolves
Key laboratory findings
- Elevated T3 and T4, low radioactive iodine uptake
Pathological features
- Diffuse goiter or slightly enlarged thyroid gland
- Preserved lobular pattern
- Follicular destruction
- Variable lymphocytic infiltrate
- Rare/no oncocytic change, rare/no focal fibrosis
Treatment
- Usually do not need treatment
- Beta block if hyperthyroidism
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