Transnasal Endoscopic Treatment of Choanal Atresia Without Prolonged Stenting

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Abstract
CONGENITAL CHOANAL atresia (CA) is a rare malformation that causes airway obstruction in newborns and infants, with an incidence of 1 in 7000 to 8000 births. It seems to occur more commonly in females than males and to be more frequently unilateral and right-sided than bilateral.1 The nature of the obstructing atretic plate has often been described as 90% bony and 10% membranous. More recent studies using modern imaging techniques have revealed that 30% of the malformations are composed of a purely bony obstruction, and 70% of a mixed bony-membranous anomaly.2 Most cases of CA are isolated malformations, but association with other congenital deformities is not exceptional, as in the CHARGE association (a malformative syndrome that includes coloboma, heart disease, CA, retarded development, genital hypoplasia, and ear anomalies, including hypoplasia of the external ear and hearing loss).1

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