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choanal atresia

 

Definition: atresia due to congenital failure of one or both choanae to open owing to the failure of the bucconasal membrane to involute. It results in nasal obstruction and, if bilateral, can endanger neonates because they are obligatory nasal breathers.

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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