
Thyroiditis
- inflammation of the thyroid gland.

Acute thyroiditis

Subacute thyroiditis

Chronic lymphocytic thyroiditis
- progressive enlargement of the thyroid gland, often associated with hypothyroidism.
- diffuse infiltration of the thyroid gland with lymphocytes, resulting in diffuse goiter, progressive destruction of the parenchyma and hypothyroidism.

Chronic fibrous thyroiditis

Iatrogenic thyroiditis

Other and unspecified chronic thyroiditis

Thyroiditis unspecified
- inflammation of the thyroid gland.