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branchial cleft |
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branchial cleft [′braŋ·kē·əl ′kleft] (embryology) A rudimentary groove in the neck region of air-breathing vertebrate embryos. (vertebrate zoology) One of the openings between the branchial arches in fishes and amphibians. 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 first branchial cleft becomes the external auditory meatus, and the first branchial pouch gives rise to the middle ear and eustachian tube. 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. Thyroid papillary carcinoma arising in ectopic thyroid tissue within a branchial cleft cyst. |
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