基底动脉干动脉瘤相对少见 ,约占动脉瘤的 0 8%。虽然应用电解可脱钢圈 (ＧＤＣ)已成功治疗许多大小形态和位置不同的动脉瘤 ,据报道 ,仅少数伴有蛛网膜下出血的基底干动脉瘤得到介入治疗。如果椎动脉延长、严重狭窄或阻塞 ,如何通过其它潜在的途径到达基底干动脉瘤 ,文献尚未 Basilar artery aneurysms are relatively rare, accounting for about 8% of aneurysms. Although the use of electrolytically derailed (GDC) stents has successfully treated many aneurysms of various sizes, shapes and locations, it has been reported that only a few basilar aneurysms with subarachnoid hemorrhage are treated with interventional procedures. If the vertebral artery is prolonged, severe stenosis or obstruction, how to reach the basilar artery aneurysm through other potential ways, the literature has not yet