• Journal of Korean Neurosurgical Society
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• v.38 no.4
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• pp.312-315
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• 2005

The persistent hypoglossal artery[PHA] is a rare anomaly that belongs to the group of embryonic carotid-basilar artery anastomoses that may occur in adults. The most commonly reported type of such an anastomosis is the primitive trigeminal artery, followed by the PHA. We report a 35-year old man, hospitalized because of an intraventricular hemorrhage, who was found to have a right persistent PHA. Three-dimensional computed tomography[CT] angiography provided excellent anatomical topology of the anomaly. To our knowledge, this patient is the first case of a PHA identified by this means in Korea.

• Journal of the Korean Society of Radiology
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• v.83 no.1
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• pp.184-188
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• 2022

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.