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Goiter is a condition where the thyroid gland is swollen or enlarged. This happens when one or more swellings occur in a part or parts of the thyroid. The thyroid gland resembles the shape of a butterfly.

A noticeable swelling in the front part of the neck is obvious in people who have this disease because the thyroid gland is located in that area, just right in front of the windpipe. A normal thyroid gland usually can’t be felt or seen at the neck area but when it is enlarged, a swelling in the neck is prominent. 
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