Aguiar G B, Conti M L M, Veiga J C E, Jory M, Souza R B
Department of Surgery, Santa Casa Medical School, São Paulo, Brazil.
Interv Neuroradiol. 2011 Sep;17(3):343-6. doi: 10.1177/159101991101700310. Epub 2011 Oct 17.
The trigeminal artery is an anastomosis between the embryonic precursors of the vertebrobasilar and carotid systems, and may persist into adult life. The association of the persistent primitive trigeminal artery (PTA) with cerebral aneurysm is well documented in the literature and, in general, aneurysms are located in the anterior circulation. We describe a patient who presented with a panencephalic Fisher III subarachnoid hemorrhage due to rupture of an intracranial aneurysm. Digital arteriography showed a saccular aneurysm in the middle third of the basilar artery, adjacent to the junction with a persistent trigeminal artery. She was submitted to endovascular treatment with embolization of the basilar artery aneurysm with coils. Aneurysms at the PTA junction with the basilar artery are rare. This paper describes a case of PTA associated with an aneurysm in the basilar artery at PTA junction and briefly reviews the literature.
三叉动脉是椎基底动脉系统和颈动脉系统胚胎前体之间的吻合支,可能持续至成年期。文献中已充分记载了持续性原始三叉动脉(PTA)与脑动脉瘤的关联,一般来说,动脉瘤位于前循环。我们描述了一名因颅内动脉瘤破裂导致全脑Fisher III级蛛网膜下腔出血的患者。数字血管造影显示在基底动脉中三分之一处有一个囊状动脉瘤,毗邻与持续性三叉动脉的交界处。她接受了血管内治疗,用弹簧圈栓塞基底动脉瘤。PTA与基底动脉交界处的动脉瘤很罕见。本文描述了一例PTA与PTA交界处基底动脉动脉瘤相关的病例,并简要回顾了文献。