goiter is a swelling of the thyroid gland, which can lead to a swelling of the neck or larynx (voice box). Goiter is a term that refers to an enlargement of the thyroid (thyromegaly) and can be associated with a thyroid gland that is functioning properly or not.

Worldwide, over 90% cases of goitre are caused by iodine deficiency. (adapted from Wikipedia)

Image source: Earthwidesurgicalfoundation.blogspot (link) photo credit, Dr. Brian Camazine.

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