Thyroid Cancer Topic Guide
Thyroid Facts The thyroid gland is part of the endocrine (hormone) system. The thyroid gland produces two hormones, thyroxine (T4) and tri-iodothyronine (T3). Diseases of the thyroid gland include hyperthyroidism, hyperthyroidism, subacute thyroiditis, thyroid cancer, and thyroid nodules. Thyroid medications are used to treat thyroid disorders.
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