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Medical Definition of Cyst thyroglossal
1. A thyroglossal cyst is a fluid-filled sac 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. A thyroglossal cyst is also called a thyrolingual cyst. (12 Dec 1998)
Lexicographical Neighbors of Cyst Thyroglossal
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