E04.0: Nontoxic diffuse goitre
The thyroid gland is a small organ in the neck below the larynx. It is made up of two sides that lie to the right and left of the trachea. The two sides are connected to each other by a bridge of thyroid gland tissue. The thyroid gland needs iodine to produce important messenger substances for the body. These messenger substances influence the heartbeat, digestion, and body temperature, among other things.
If tissue grows in the thyroid gland, the thyroid gland gets bigger. This is also known as a goiter. The thyroid gland may also be working in a different way.
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