Infant with right sided nasal drip. Clinical suspicion of choanal atresia.
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Movement artifact on some images ( scan performed without sedation in a infant )
Thin bony septum across the right chonanal opening.
Small amount of obstructive fluid in the posterior right nasal canal.
Normal left nasal canal.
Choanal atresia refers to a lack of formation of the choanal openings.
Bilateral typically present soon after birth with neonatal respiratory distress.
Unilateral choanal atresias present later and can be relatively asymptomatic or present with rhinorrhoea and represent 2/3 of cases.
The vast majority ( 90% ) are osseous, with the remaining 10% membraneous.