Choanal Atresia

  • Etiology: 90% bony, 10% membranous
  • Imaging: narrow choana, vomer thickened + bowed
  • Clinical: most common nasal anomaly, hypoxia with feeding, nasogastric tube won’t pass, associated with CHARGE association (Coloboma (80%), Heart defects, Atresia of choana (50%), Retardation, GU anomalies, SCC dysplasia of Ear (90%), Arhinencephaly (50%))

Cases of Choanal Atresia

Radiograph of choanal atresia
AP + lateral radiographs of the airway after the injection of contrast into the nares bilaterally shows no passage of contrast into the oropharynx with the obstruction at the level of the vomer.