Abstract：
Our knowledge of the vascularization of the precentral gyrus by branches of the anterior cerebral artery (ACA) relies mainly on anatomical cadaveric dissection. A distal branch of the ACA known as the posterior internal frontal artery (PIFA) is thought to vascularize the precentral gyrus responsible for proximal arm movement; however, no clinical correlation has yet been reported to confirm this relation. In this manuscript, we report a case of coil migration in the PIFA, causing proximal arm weakness in a 58-year-old woman treated for aneurysmal subarachnoid hemorrhage. The occurrence of clinical signs immediately following coil migration into the PIFA, combined with evidence of stroke in the cortical territory related to arm movement as seen on imaging, indicates that the PIFA indeed can vascularize this lateral portion of the precentral gyrus. This case confirms our current understanding of the vascularization of the precentral gyrus by distal ACA branches, in particular the PIFA.
摘要：
我们对大脑前动脉（ACA）分支的中央前回血管化的认识主要取决于解剖尸体解剖。ACA的远端分支称为后额内动脉（PIFA），被认为可以使负责近端手臂运动的中央前回血管化；但是，目前尚无临床相关性报道证实这种相关性.在这份手稿中,我们报告了PIFA中线圈迁移的情况，导致一名58岁接受动脉瘤性蛛网膜下腔出血治疗的女性近端手臂无力。线圈迁移到PIFA后立即出现临床症状，结合影像学上看到的与手臂运动相关的皮质区域中风的证据，表明PIFA确实可以使中央前回的外侧部分血管化。该病例证实了我们目前对远端ACA分支的中央前回血管化的理解，特别是PIFA。
