- Thyroiditis comprises a diverse group of disorders:
- That are among the most common endocrine abnormalities encountered in medical endocrine clinical practice as well as by surgeons managing the thyroid
- These disorders range from:
- The extremely common chronic lymphocytic thyroiditis (Hashimoto’s thyroiditis) to the extremely rare invasive fibrous thyroiditis (Riedel’s thyroiditis)
- Clinical presentations are also diverse:
- Ranging from an incidental finding of a goiter to potentially life-threatening illness:
- From hypothyroidism to thyrotoxicosis.
- Ranging from an incidental finding of a goiter to potentially life-threatening illness:
- The term thyroiditis implies:
- That the disorders are inflammatory processes involving the thyroid gland:
- Although some of the lesions are not inflammatory and are included in the thyroiditis category largely for convenience.
- That the disorders are inflammatory processes involving the thyroid gland:
- A rational approach to such patients:
- Including history, physical examination, laboratory evaluation, radionuclide or ultrasonographic imaging, and fine-needle aspiration biopsy:
- Will allow the appropriate diagnosis to be made in the majority of cases.
- Including history, physical examination, laboratory evaluation, radionuclide or ultrasonographic imaging, and fine-needle aspiration biopsy:
| Chronic lymphocytic thyroiditis (Hashimoto’s thyroiditis) |
| Subacute lymphocytic thyroiditis: |
| — Postpartum thyroiditis |
| — Sporadic silent thyroiditis |
| Subacute granulomatous thyroiditis (De Quervain’s thyroiditis) |
| Drug-induced thyroiditis |
| Radiation thyroiditis |
| Acute suppurative / infectious thyroiditis: |
| — Bacterial, fungal, parasitic |
| Invasive fibrous thyroiditis (Riedel’s thyroiditis) |
| Miscellaneous: |
| — Sarcoid, amyloid, traumatic, and palpation-induced thyroiditis |
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Rodrigo Arrangoiz MS, MD, FACS, FSSO 