What Is Thyroid Hyperplasia

Thyroid hyperplasia is a physiologic response of follicular epithelium to hormonal changes that result in disturbances in the feedback mechanism of thyrotropin-releasing hormone and thyroid-stimulating hormone.

What causes thyroid hyperplasia?

Thyroid gland hyperplasia and enlargement (goiter) is most often caused by iodine deficiency. Although most commonly reported in budgerigars, this species rarely appears to suffer from thyroid endocrinopathy.

What causes hyperplastic goiter?

Causes and symptoms Excess TSH (or similar hormones), cysts, and tumors will enlarge the thyroid gland. Of these, TSH enlarges the entire gland while cysts and tumors enlarge only a part of it.