choanal polyp

例句：

1. 1. He was diagnosed with a choanal polyp and required surgery.
   他被诊断出患有口咽息肉，需要接受手术。
2. 2. The doctor found a small choanal polyp on his throat.
   医生在他的喉咙里发现了一个小的口咽息肉。
3. 3. The patient's condition worsened after the choanal polyp was removed.
   患者的病情在切除口咽息肉后恶化了。