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Thyroglossal cyst: A fluid-filled sac present at birth in the midline of the neck. A thyroglossal cyst is a congenital malformation (a birth defect). It results from incomplete closure of a segment of the thyroglossal duct, a tube-like structure that normally closes as the embryo develops. Also called a thyroglossal duct cyst or a thyrolingual cyst.
A cyst formed from the remnants of the thyroglossal duct.
Pictures of Thyroglossal Duct Cysts. Thyroglossal duct cysts are remnants of the embryonic thyroglossal duct that may occur anywhere from the base of the tongue to the ...
A thyroglossal duct cyst is a neck mass or lump that develops from cells and tissues remaining after the formation of the thyroid gland during embryonic development.
Symptoms, Treatment and Prevention of Thyroglossal Duct Cyst ... Definition of Thyroglossal Duct Cyst; Description of Thyroglossal Duct Cyst
Thyroglossal duct cysts usually make themselves known early in life. The thyroid gland in an embryo actually starts as a small group of cells at the very back of the base ...