永存颈内-基底动脉吻合的血管病变特点

发布时间：2018-04-03 13:08

本文选题：永存颈内-基底动脉吻合　切入点：永存三叉动脉　出处：《临床神经病学杂志》2017年01期

【摘要】：目的探讨CTA诊断永存颈内-基底动脉吻合的血管病变特点。方法回顾性分析6例永存颈内-基底动脉吻合患者的CTA检查及MRI检查资料。结果 6例患者中,4例为永存三叉动脉(PTA),1例为永存舌下动脉(PHA),1例为永存寰前节间动脉(PIA)。4例PTA中2例位于右侧,2例位于左侧,其中2例伴有近心端基底动脉和两侧椎动脉发育不良,1例伴有胚胎型左侧大脑后动脉。1例PHA起始于右侧颈内动脉颈段,合并右侧大脑中动脉动脉瘤,双侧椎动脉缺如。1例PIA起始于右侧颈外动脉,合并右位主动脉弓、双侧颈内动脉闭塞、右侧后交通动脉多发动脉瘤。结论永存颈内-基底动脉吻合属于罕见的先天性头颈部血管变异。PTA起源于颈内动脉海绵窦段,穿过鞍背中线或绕过鞍背连于基底动脉。PHA起源于颈内动脉C1段,经扩大的舌下神经管入颅后与基底动脉吻合。PIA起源于颈内动脉C1段或颈外动脉,向上与椎动脉汇合后,经枕骨大孔入颅。
[Abstract]:Objective to investigate the characteristics of CTA in the diagnosis of persistent internal-basilar artery anastomosis.Methods the CTA and MRI findings of 6 patients with persistent internal-basilar artery anastomosis were retrospectively analyzed.Results among the 6 cases, 4 cases were permanent trigeminal artery (PTAA), 1 case was persistent inferior lingual artery (PHAA), 1 case was persistent anterior atlas internode artery (PIA.4). Of the 4 cases of PTA, 2 cases were located on the right side, 2 cases were located on the left side, 2 cases were located on the right side, 2 cases were located on the left side.Among them, 2 cases were accompanied with proximal basilar artery and bilateral vertebral artery dysplasia, 1 case with embryonic left posterior cerebral artery. 1 case with PHA originated from the carotid segment of right internal carotid artery and associated with right middle cerebral artery aneurysm.Bilateral vertebral arteries were absent in 1 cases of PIA originated from the right external carotid artery with right aortic arch occlusion of bilateral internal carotid artery and multiple aneurysms of right posterior communicating artery.Conclusion the endo-basilar artery anastomosis is a rare congenital vascular variation in the head and neck. PTA originated from the cavernous sinus of the internal carotid artery, crossed the central line of the dorsal saddle or bypassed the dorsal saddle to the basilar artery. PHA originated from the C1 segment of the internal carotid artery.The enlarged hypoglossal canal was anastomosed with the basilar artery after entering the skull. PIA originated from the internal carotid artery C1 segment or the external carotid artery, followed by confluence with the vertebral artery upward and through the foramen magnum of the occipital bone.
【作者单位】：长江航运总医院武汉脑科医院医学影像科;
【分类号】：R743.3;R816.1;R445.2

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