Question

abnormal enlargement of thyroid gland leading to an excessive swelling of the neck ?​

Answer 1

1. Goiter is a noncancerous enlargement of the thyroid gland. The most common cause of goiter worldwide is iodine deficiency in the diet. ... Conversely, goiter is often caused by — and a symptom of — hyperthyroidism in the United States, where iodized salt provides plenty of iodine
2. A goiter (GOI-tur) is an abnormal enlargement of your thyroid gland. Your thyroid is a butterfly-shaped gland located at the base of your neck just below your Adam's apple. Although goiters are usually painless, a large goiter can cause a cough and make it difficult for you to swallow or breathe.