intracranial foreign body

例句：

1. 1. He was diagnosed with a brain tumor, which required immediate surgery.
   他被诊断出患有脑肿瘤，需要立即手术。
2. 2. The patient's condition worsened significantly after the surgery.
   手术后，患者的病情显著恶化。
3. 3. The doctors performed an emergency craniotomy to remove the foreign body from his brain.
   医生们进行了紧急的开颅手术，将异物从他的脑部取出。