thyroglossal

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Relating to the thyroid gland and the tongue.

Pertaining to the thyroid and tongue.

• t. cyst — developmental abnormality near the site of the thyroid diverticulum; may exist as a subepiglottic cyst, surrounded by thyroid follicular cells, embedded in the root of tongue; may cause inspiratory dyspnea and exercise intolerance.
• t. duct — vestigial canal of the epithelial outgrowth from the floor of the pharynx that develops into the thyroid gland. Parts of the duct and accessory thyroid tissue derived from it may become cystic or undergo neoplastic transformation.