thyroglossal cystmedical dictionary

<anatomy, embryology> A thyroglossal cyst is a fluid-filled sac that is present at birth and located in the midline of the neck.

A thyroglossal cyst is a result of incomplete closure of a segent of a tube-like structure (the thyroglossal duct) that is present, and normally closes, as the embryo develops.

Synonyms: thyrolingual cyst.

(07 Mar 2000)