microannulus

例句：

1. 1. The doctor diagnosed him with a microannulus in his neck.
   医生诊断他颈部有一个微动脉瘤。
2. 2.The patient's condition worsened after the surgery, and the microannulus was removed.
   手术后，患者的病情恶化了，微动脉瘤被移除。
3. 3.The microannulus had been causing him discomfort since he was young.
   自小起，这个微动脉瘤就给他带来了不适。