Presentation
Patient admitted with posterior circulation symptoms including ataxia and vertigo. Normal non contrast CT brain. No prior medical or surgical history.
Patient Data
Age: 35 years
Gender: Female
From the case:
Persistent primitive trigeminal artery (Saltzman I)
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Info
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Intracranial angiogram demonstrating communicating artery between distal basilar artery and left internal carotid artery (petrous and cavernous part) crossing over the dorsum sellae.
Additionally partially visualized vertebral arteries and proximal basilar artery are hypoplastic.
Case Discussion
A persistent primitive fetal artery is one of the carotid-basilar anastomotic arteries. It is one of the very rare causes of vertigo and ataxia.