Ji Cheol, Ahn Jae-Geun
Department of Neurosurgery, St. Paul's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
J Korean Neurosurg Soc. 2010 Jan;47(1):71-3. doi: 10.3340/jkns.2010.47.1.71. Epub 2010 Jan 31.
A 28-year-old woman was referred to our hospital with a sudden, very severe headache. Brain computed tomographic angiography showed a saccular cerebral aneurysm at the bifurcation of the left middle cerebral artery and infraoptic courses of both anterior cerebral arteries. The anterior cerebral arteries were seen to arise from the ipsilateral internal cerebral arteries at the level of the origin of the ophthalmic artery, passed underneath the ipsilateral optic nerve, and turned upward at ventral portion of the optic chiasm.Infraoptic course of the proximal anterior cerebral artery is an extremely rare anomaly and is often associated with cerebral aneurysms. We report the clinical features, radiological findings, and possible genesis of this anomaly with a literature review.
一名28岁女性因突发剧烈头痛被转诊至我院。脑部计算机断层血管造影显示，在左大脑中动脉分叉处及双侧大脑前动脉视交叉下走行处有一个囊状脑动脉瘤。可见大脑前动脉在眼动脉起始水平发自同侧大脑内动脉，在同侧视神经下方通过，并在视交叉腹侧向上转折。大脑前动脉近端视交叉下走行是一种极其罕见的异常情况，常与脑动脉瘤相关。我们通过文献回顾报告了该异常的临床特征、影像学表现及可能的发病机制。
