Canadian Medical Guide > Diseases > Neoplasms > Neoplasms by Site > Endocrine Gland Neoplasms > Thyroid Neoplasms > Thyroid Nodule Terms and Definitions

Thyroid Nodule

Medical Definition:	A small circumscribed mass of differentiated tissue associated with the thyroid gland. It can be pathogenic or non-pathogenic. The growth of nodules can lead to a condition of GOITER, NODULAR. Most nodules appear between the ages of 30 and 50 years and most are benign.
Guide Notes:	"pathogenic or non-pathogenic", neoplastic or non-neoplastic; if neoplastic, /blood supply /chem /secret /ultrastruct permitted
Previously Indexed:	Thyroid Diseases (1966-1991),Thyroid Neoplasms (1966-1991)

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