bone cyst

例句：

1. 1. He had a bone cyst removed from his knee.
   他从膝盖上取出了一个骨囊肿。
2. 2.The doctor diagnosed her with a bone cyst in her shoulder.
   医生诊断出她的肩膀上有一个骨囊肿。
3. 3. Bone cysts are rare but can cause significant pain and discomfort.
   骨囊肿很少见，但可以引起严重的疼痛和不适。