mesencephalitis

例句：

1. 1.The patient was diagnosed with mesencephalitis after a series of tests.
   经过一系列测试后，病人被诊断为脑膜炎症。
2. 2.Mesencephalitis is a rare but serious condition that can cause severe headaches and fever.
   脑膜炎症是一种罕见但严重的状况，可能导致严重的头痛和发热。
3. 3. In some cases, mesencephalitis can be caused by viral infections, such as the flu or herpes.
   在某些情况下，脑膜炎症可能是由病毒感染引起的，如流感或单纯疱疹。