硬脑膜动静脉瘘

Dural arteriovenous fistula

报告４例硬脑膜动静脉瘘。对其病因、临床特征、诊断及血管内栓塞治疗进行了讨论。多枝细小动脉供血者，以液态栓塞物栓塞治疗效果较好，较大瘘口以固态栓塞物效果较好。栓塞治疗中应注意＂危险吻合＂的存在，防止误栓。

Four cases with dural arteriovenous fistula(DAVF) are reported in this paper. The etiology, clinical fcatures, diagnosis and endovascular embolization are discussed. DAVFs with multiple small arterial supplies are preferred by liquid embolic materials. DAVFs with large fistulas are preferred by solid embolic materials.Dangerous anastomosis should be taken eare of during embolic process in order to prevent the embolization of normal cerebral vessels.