mastoid region

例句：

1. 1. The patient's condition was stable in the mastoid region.
   患者的病情在乳突区域稳定。
2. 2. The surgeon performed a mastoidectomy to remove the tumor.
   外科医生进行了乳突切除术以切除肿瘤。
3. 3. Mastoiditis is a common cause of facial pain and fever.
   乳突炎是面部疼痛和发热的常见原因。