起源于颈内动脉的小脑动脉。
Cerebellar arteries originating from the internal carotid artery.
作者信息
Siqueira M, Piske R, Ono M, Marino Júnior R
机构信息
Division of Neurosurgery, Sao Paulo University Medical School, Brazil.
出版信息
AJNR Am J Neuroradiol. 1993 Sep-Oct;14(5):1229-35.
PURPOSE
To study the incidence of cerebellar arteries originating directly from the internal carotid artery, and to discuss the probable embryological origin and clinical implications of this anatomical anomaly.
METHODS
We reviewed 5500 angiographic studies done at our institution in the last 4 years, searching for these anomalous vessels as well as for other anatomical variants.
RESULTS
Eleven cerebellar arteries originating directly from the internal carotid artery and nine embryonic cerebral arteries were found.
CONCLUSION
These arteries are considered persistent trigeminal artery variants and seem to occur as the result of the persistence of a primitive trigeminal artery associated with an incomplete fusion of the longitudinal neural arteries. These anomalous vessels are clinically significant particularly because of their role in endovascular therapeutic and surgical complications and the paradoxical lesions in the cerebellum that occur as a result of carotid disease.
目的
研究直接发自颈内动脉的小脑动脉的发生率，并探讨这种解剖学异常可能的胚胎学起源及临床意义。
方法
我们回顾了本机构在过去4年中进行的5500例血管造影研究，寻找这些异常血管以及其他解剖变异。
结果
发现11条直接发自颈内动脉的小脑动脉和9条胚胎性脑动脉。
结论
这些动脉被认为是持续性三叉动脉变异，似乎是由于原始三叉动脉持续存在且纵向神经动脉融合不完全所致。这些异常血管具有临床意义，特别是因其在血管内治疗和手术并发症中的作用以及颈动脉疾病导致的小脑中矛盾性病变。
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