Persistent Trigeminal Artery Variant Terminating in the Ipsilateral Superior Cerebellar Artery.

Taehan Yongsang Uihakhoe chi Pub Date : 2022-01-01 Epub Date: 2021-09-27 DOI:10.3348/jksr.2021.0023
Tae Young Park, Byung Hoon Lee, Yoon Joon Hwang, Ji Young Lee, Suk Hyun Bae
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Abstract

Persistent trigeminal artery (PTA) represent an unusual remnant of the fetal carotid-basilar anastomosis. Persistent trigeminal artery variant (PTAV) is a rare anastomosis between the internal carotid artery and cerebellar artery, without an interposing basilar artery segment. We report the case of 49-year-old female with an incidentally discovered, rare variation of PTA that directly terminated in the ipsilateral superior cerebellar artery. The variation was observed on CT angiography, digital subtraction angiography, and MR angiography. Additionally, we reviewed the embryogenesis of PTA and PTAV and discussed the clinical implications of this variation.

Abstract Image

持续性三叉动脉变体止于同侧小脑上动脉。
持续性三叉动脉(PTA)是胎儿颈动脉-基底动脉吻合的一种不寻常的残余。持续性三叉动脉变异(PTAV)是一种罕见的颈内动脉和小脑动脉之间的吻合,没有插入基底动脉段。我们报告的情况下,49岁的女性偶然发现,PTA变异,直接终止于同侧小脑上动脉。在CT血管造影、数字减影血管造影和MR血管造影上观察到这种变化。此外,我们回顾了PTA和PTAV的胚胎发生,并讨论了这种变异的临床意义。
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