The document discusses other conditions of the thyroid gland including different types of thyroid malignancies with papillary carcinomas being the most common. It also discusses different types of thyroiditis such as acute suppurative thyroiditis caused by bacterial infection and chronic thyroiditis usually being autoimmune in nature. The document also defines euthyroid hyperthyroxinemia as a condition where serum thyroxine and triiodothyronine concentrations are increased but thyroid-stimulating hormone is normal and there are no clinical signs of thyroid dysfunction.
2. • Thyroid malignancies are divided into papillary carcinomas (80%),
follicular carcinomas (10%), medullary thyroid carcinomas (5-10%),
anaplastic carcinomas (1-2%), primary thyroid lymphomas (rare), and
primary thyroid sarcomas (rare)
• Thyroiditis includes the following inflammatory diseases of the
thyroid gland: (1) acute suppurative thyroiditis, which is due to
bacterial infection; (2) subacute thyroiditis, which results from a viral
infection of the gland; and (3) chronic thyroiditis, which is usually
autoimmune in nature.
3. Euthyroid hyperthyroxinemia
• is defined as a condition in which the serum total thyroxine (T4) and
triiodothyronine (T3) concentrations are increased, but the thyroid-
stimulating hormone (TSH) concentration is normal and there are no
clinical signs or symptoms of thyroid dysfunction.
