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. If imaging is performed of your thyroid, smaller nodules that cannot be felt can be found in over 50% of patients. The risk of a thyroid nodule being cancer is about 5%; therefore, further evaluation is recommended if the nodule is >1 cm in size or there are other concerning features.
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Thyroid gland : thyroid nodule