Goiter may be present in which thyroid states?

Goiter may be present in which thyroid states?

• A. Only hyperthyroidism
• B. Only hypothyroidism
• C. Both hypo- and hyperthyroid states
• D. Euthyroid state

Answer: (C)

Goiter is enlargement of the thyroid gland driven by chronic stimulation of thyroid tissue. In hypothyroid states, low thyroid hormone levels raise TSH, which constantly stimulates the gland to grow, leading to a goiter. In hyperthyroid states, the gland can still enlarge because of ongoing stimulation or autoimmune processes that cause diffuse hyperplasia or nodular growth. So, goiter isn’t confined to one thyroid function level—both reduced and increased thyroid states can feature an enlarged gland, making this option the best choice. (Note that goiter can also occur in euthyroid individuals, but the question focuses on the thyroid state scenarios that produce enlargement.)

Goiter is enlargement of the thyroid gland driven by chronic stimulation of thyroid tissue. In hypothyroid states, low thyroid hormone levels raise TSH, which constantly stimulates the gland to grow, leading to a goiter. In hyperthyroid states, the gland can still enlarge because of ongoing stimulation or autoimmune processes that cause diffuse hyperplasia or nodular growth. So, goiter isn’t confined to one thyroid function level—both reduced and increased thyroid states can feature an enlarged gland, making this option the best choice. (Note that goiter can also occur in euthyroid individuals, but the question focuses on the thyroid state scenarios that produce enlargement.)