BLOCKAGE OF THE NASAL PASSAGEWAY IN THE NEWBORN (CHOANAL ATHRESIA)
It is the congenital unilateral or bilateral closure of the area between the nasal cavity and the nasopharynx. This area, which should normally be open during childbirth, can sometimes remain closed in the form of a thin membrane structure and sometimes rigidly in the form of a bone structure. Choanal atresia can be alone or…



