Catalog

Choanal atresia, unilateral

No MMS code

Link to WHO Definition

Choanal atresia, unilateral – http://id.who.int/icd/entity/1247369366

Unilateral choanal atresia is a congenital anomaly with a usually sporadic etiology that is more commonly seen in females than males (2:1), where the nose is blocked by bony or soft tissue formed during embryologic development on only one side (more commonly on the right side) and characterised by nasal obstruction and rhinorrhoea, usually presenting at birth but that may go undetected until a respiratory infection aggravates the condition.