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What is Choanal atresia is associated with which syndrome: and explain in detail?
Most cases of choanal atresia are sporadic, although familial cases suggest autosomal dominant or autosomal recessive modes of a single gene defect. Approximately one-half to two-thirds of patients with choanal atresia have associated malformations, which occur more frequently with bilateral atresia. The most common of these is the CHARGE association: Coloboma of the eye Hea malformations Choanal Atresia Retarded growth, development, or both Genital hypoplasia Ear malformations, deafness, or both