Glossary -   Goiter



This is an enlarged thyroid gland. It shows up as a swelling in the front of the neck. It can occur with different types of thyroid disease. Both hypothyroidism (low thyroid hormone) and hyperthyroidism (excess thyroid hormone) can cause goiters. They are also common in people with iodine deficiency. The enlarged thyroid will return to normal size once the underlying thyroid condition is treated.