choanal atresia

例句：

1. 1. This condition is often associated with chronic respiratory problems.
   这种状况常与慢性呼吸问题相关。
2. 2. The child's throat was severely constricted, making it difficult for him to breathe.
   孩子的喉咙严重狭窄，使他呼吸困难。
3. 3. The patient underwent surgery to repair the choanal atresia and has made a full recovery.
   患者接受了手术以修复喉咽管闭锁并已完全康复。