A thyroid nodule is a growth within the thyroid gland. Thyroid nodules are extremely common, and nodules large enough to be felt can be seen in 5 to 10% of women and 1 to 5% of men. A goiter is an enlargement of the thyroid gland and may be due to general enlargement of the gland or enlargement due to the presence of multiple nodules.
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Thyroid gland: thyroid nodule
Benign non-toxic multinodular goiter