is an abnormal enlargement of the thyroid gland that produces a swelling in the front of the neck
Symptom: Swollen Neck. A goiter is an enlargement of the thyroid gland, As shown here; an enlarged thyroid can be seen as a swelling in the front of the neck. A goiter can occur both as a result of hypothyroidism and hyperthyroidism.It can sometimes also result from tumors or nodules that develop within the thyroid gland.t controls the functions of many other glands in the body, including the thyroid. The pituitary gland produces TSH, which signals the thyroid gland to make thyroid hormones. If there is a problem with the pituitary gland and not enough TSH is produced, hypothyroidism can result.