后交通动脉远端颈内动脉节段性发育不全，从而确定了一个新的胚胎学节段。
Segmental agenesis of the internal carotid artery distal to the posterior communicating artery leading to the definition of a new embryologic segment.
作者信息
Gailloud Philippe, Clatterbuck Richard E, Fasel Jean H D, Tamargo Rafael J, Murphy Kieran J
机构信息
Division of Interventional Neuroradiology, Johns Hopkins Medical Institutions, Baltimore, MD, USA.
出版信息
AJNR Am J Neuroradiol. 2004 Aug;25(7):1189-93.
Abstract
We report a case of segmental agenesis of the right internal carotid artery (ICA) in a 53-year-old woman, associated with a saccular aneurysm of the left anterior cerebral artery (A1 segment) presenting with a right hemispheric transient ischemic attack. The agenetic segment was located distal to the origin of the posterior communicating artery (PComA), as documented both angiographically and by direct surgical inspection. This observation suggests the existence of a previously unrecognized embryologic segment of the ICA, located between the PComA origin and the terminal bifurcation of the ICA into the anterior and middle cerebral arteries.
摘要
我们报告了一例53岁女性右侧颈内动脉（ICA）节段性发育不全的病例，该病例伴有左侧大脑前动脉（A1段）囊状动脉瘤，并出现右侧半球短暂性脑缺血发作。血管造影和直接手术检查均证实，发育不全的节段位于后交通动脉（PComA）起源的远端。这一观察结果提示，在PComA起源与ICA终末分叉为大脑前动脉和大脑中动脉之间，存在一个此前未被认识的ICA胚胎学节段。
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