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thyroglossal duct |
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thyroglossal duct [thī·rō′gläs·əl ′dəkt] (embryology) A narrow temporary channel connecting the anlage of the thyroid with the surface of the tongue. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The differential diagnosis of a cystic lesion in the floor of the mouth includes a thyroglossal duct cyst, cystic hygroma, cystic lymphangioma, mucocele, branchial cleft cyst, hemangioma, and ranula. The thyroglossal duct undergoes atrophy, and it is usually absent in a newborn. Most thyroglossal duct cysts are located at or very close to the midline. |
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