Sanders W P, Sorek P A, Mehta B A
Department of Diagnostic Radiology and Medical Imaging, Henry Ford Hospital, Detroit, MI 48202.
AJNR Am J Neuroradiol. 1993 May-Jun;14(3):675-80.
To determine the association of intracranial arterial fenestration and aneurysms.
We retrospectively reviewed 5,190 cerebral angiogram reports and identified 37 patients with arterial fenestrations.
These 37 patients had 38 fenestrated arteries: 16 basilar, 10 vertebral, nine middle cerebral, and three anterior cerebral arteries. Seven of these patients had a total of 13 aneurysms, although only one aneurysm was at the site of a fenestration. The remaining aneurysm patients had fenestrations as unassociated findings. Other anomalies detected were two azygous anterior cerebral arteries, on dural arteriovenous shunt of the cavernous sinus, one extracranial arteriovenous fistula, and one developmental venous anomaly (venous angioma). None of the fenestrations were in the vessels directly involved with these associated lesions. The incidence of aneurysm at the fenestration was 7% (one in 16) for basilar artery fenestrations. Considering all fenestrations, the incidence of aneurysm at the site of fenestration was 3%.
Our data show that the association of a fenestration with an aneurysm at the fenestration site is not different from the typical association of circle of Willis bifurcations with saccular aneurysms.
确定颅内动脉开窗与动脉瘤之间的关联。
我们回顾性分析了5190份脑血管造影报告，确定了37例有动脉开窗的患者。
这37例患者有38条开窗动脉：16条基底动脉、10条椎动脉、9条大脑中动脉和3条大脑前动脉。其中7例患者共有13个动脉瘤，不过只有1个动脉瘤位于开窗部位。其余动脉瘤患者的开窗为不相关发现。检测到的其他异常包括2条奇异性大脑前动脉、1例海绵窦硬脑膜动静脉分流、1例颅外动静脉瘘和1例发育性静脉异常（静脉血管瘤）。所有开窗均不在与这些相关病变直接相关的血管中。基底动脉开窗处动脉瘤的发生率为7%（16例中有1例）。考虑所有开窗情况，开窗部位动脉瘤的发生率为3%。
我们的数据表明，开窗与开窗部位动脉瘤之间的关联与 Willis 环分叉处与囊状动脉瘤的典型关联无异。
