The woman in this photo has a goiter. A goiter is an abnormal enlargement of the thyroid gland, which is located in the neck. The formation of a goiter may occur in a number of different thyroid disor...The woman in this photo has a goiter. A goiter is an abnormal enlargement of the thyroid gland, which is located in the neck. The formation of a goiter may occur in a number of different thyroid disorders. You’ll learn why in this concept.