Choanal atresia is a blockage in the back of a baby’s nose that makes it hard to breathe. It’s often seen in newborns with other birth defects, such as Treacher Collins syndrome or CHARGE syndrome.

Choanal atresia is a rare condition that affects babies. It is a congenital defect that affects respiratory function; and caused by blockage of the choana, which is a passageway, that connects each ...