thyroglossal cyst

Up to half of thyroglossal cysts are not diagnosed until adult life.

A thyroglossal cyst will move upwards with protrusion of the tongue.

Thyroglossal cysts are associated with an increased incidence of ectopic thyroid tissue.

Most fistulae are acquired following rupture or incision of the infected thyroglossal cyst.

A thyroglossal cyst can develop anywhere along a thyroglossal duct, though cysts within the tongue or in the floor of the mouth are rare.

A thyroglossal cyst is a fibrous cyst that forms from a persistent thyroglossal duct.

Some congenital swellings may not appear since birth, but later in life, e.g., branchial cyst, dermatoid cyst, thyroglossal cyst.

The most common locations for a thyroglossal cyst is midline or slightly off midline, between the isthmus of the thyroid and the hyoid bone or just above the hyoid bone.

Treatment for a thyroglossal cyst is called the Sistrunk procedure: surgical resection of the duct to the base of the tongue and removal of the medial segment of the hyoid bone.