meningioma of craniocervical junction

例句：

1. 1. The patient hada meningioma removed from thebrain.
   患者从大脑中取出了一个脑膜瘤。
2. 2. The diagnosis of meningioma is often made during surgery.
   诊断脑膜瘤通常在手术期间进行。
3. 3. Meningiomas are rare but can beaggressive and require close monitoring.
   脑膜瘤罕见但可能具有侵袭性，需要密切监测。