[Choanal atresia. An unrecognized malformation. Report of 3 cases at the Lomé University Hospital Center].

The choanal atresia is a rare congenital malformation. Its clinical diagnosis is easy and must be done at the birth by the midwife or the obstetrician. We recommend the aspiration in all hospital maternity wards. This attitude avoids the unrecognized of an unilateral choanal atresia. The authors report three cases with a successfully treatment.