1·Sinus pericranii is a rare vascular anomaly involving an abnormal communication between the intracranial and extracranial circulations through dilated diploic veins of the skull.
颅骨膜血窦是一种罕见的血管畸形，颅内与颅外血液循环借扩张的颅骨板障静脉形成异常交通。
2·The prognosis is poor with a median survival of 6 to12 months (similar to GBM). Local recurrence is typical, with extracranial metastases being common.
预后较差，平均生存时间是6 - 12个月(类似于gbm)。局部复发及颅外转移常见。
3·Objective: Intracranial artery occlusive disease including middle cerebral artery and extracranial carotid artery occlusive disease are major causes of ischemic stroke.
目的：包括大脑中动脉在内的颅内大动脉和颅外颈动脉狭窄是缺血性脑卒中的常见原因。
4·Objective to study the safety and feasibility of stent placement (SP) therapy for extracranial arterial stenosis and to observe its efficacy and complication.
目的观察支架置入(sp)术治疗颅外动脉狭窄的疗效及其并发症，探讨其安全性与可行性。
5·Neuroblastoma is the most common extracranial solid tumor, which accounts for10%of childrens tumor.
神经母细胞瘤是儿童颅外最常见的实体瘤，占儿童肿瘤的10%。