Hi doctors, was just wondering what is bilateral coanial atresia?

Choanal atresia ... Is a congenital blockage of the nasal passage. It can occur on one side (unilateral) or both sides (bilateral). It is usually found in babies soon after birth because it causes breathing problems, since babies usually breathe mostly through the nose. The initial treatment is to make sure the baby can breathe ok. Surgery is needed at some point to open up the nasal passage(s).