Hi, Thanks for writing to Healthcare magic. I can understand the stress and worry you are facing. I had a query, is it unilateral or bilateral? Does the child have any other associated problems? He must have undergone eye checkup, echo? Is his development fine? Does he go to school and ho is his concentration at school? Was the defect membranous or bony? Choanal atresia is a congenital disorder where the back of the nasal passage (choana) is blocked, usually by abnormal bony or soft tissue (membranous) due to failed re canalization of the nasal fossae during fetal development. Post surgery treatment to open the atretic area, child may have stenosis of the choanal (nasal) opening, so they may have constant runny nose. Children need to undergo re canalization of the hole later in life. A stent may be inserted to keep the newly formed airway patent or repeated dilatation may be performed. 2. Thanks. If you have any more queries I am happy to answer them. Else please rate this answer and close the discussion