Since 1829, when Otto1 published the first paper on choanal atresia as an autopsy discovery, many articles on the subject have been presented in the medical literature. Such papers have appeared even more frequently in recent times, not because the condition is rare, as always has been supposed, but because it is now better diagnosed and we think of it more frequently. Thus, Ronaldson,2 in 1881, described a case of bilateral membranous choanal atresia that he recognized clinically. Surgical intervention was postponed, and the child died of asphyxia. He suggested in his commentary that if this possibility was considered by the obstetrician and pediatrician many of the cases diagnosed as neonatal asphyxia would be attributed to choanal atresia.
Nevertheless, Kazanjian3 tried to demonstrate the rarity of choanal atresia, and on review of the records of the Massachusetts Eye and Ear Infirmary from 1922 to 1938 he found
POCH-VIÑALS R, CALVO RR. Choanal Atresia: An Embryological, Clinical, and Therapeutical Study. AMA Arch Otolaryngol. 1956;63(6):559–575. doi:10.1001/archotol.1956.03830120019004
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