外伤性基底动脉瘤很少见。在过去 30年内仅有 5例报道 ,直接起源于后颅窝内动脉的外伤性动脉瘘更为罕见 ,近期有小脑后下动脉和基底动脉的报道。我们描述了一全基底动脉外伤性假性动脉瘤伴基底动脉海绵窦瘘的ＣＴ、ＭＲＩ和血管造影表现 ,并分析其形成原因。病人 12岁 ,汽车撞 Traumatic basilar artery aneurysms are rare. Only 5 cases have been reported in the past 30 years. Traumatic arterial fistulas, which originate directly from the posterior fossa of the posterior fossa, are even more rare, with recent reports of the inferior posterior inferior cerebellar artery and the basilar artery. We describe CT, MRI and angiography of a basilar artery injury with pseudoaneurysm and basilar cavernous fistula, and analyze their causes. Patient 12 years old, car hit