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Virtual Pediatric Hospital: Paediapaedia: Croup (Acute Laryngotracheobronchitis) Paediapaedia: Chest and Airway Diseases

Choanal Atresia

Michael P. D'Alessandro, M.D.
Peer Review Status: Internally Peer Reviewed


Clinical Presentation:
If unilateral, the patient may be asymptomatic. If bilateral, the symptoms include dypsnea and apnea during feeding.

Etiology/Pathophysiology:
Due to a membranous or bony occlusion (septum) between the nose and pharynx, associated with medially bowing of the lateral walls of the nasal cavity. Part of the CHARGE association - coloboma, heart disease, choanal atresia, retarted growth, genital hypoplasia, and ear anomalies.

Pathology:
Not applicable

Imaging Findings:
On computed tomography, a bony occlusion between the nose and the pharynx can be visualized.The lateral walls of the nasal cavity are thickened and bowed medially, and the vomer is usually enlarged.

DDX:

References:
See References Chapter.

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