1 doctor weighed in:

MRI brain find: presence of a persistent trigeminal artery and hypoplasia of the basilar artery? What is this I read its very rare & cause aneurysm?

1 doctor weighed in
Dr. Paul Garrett
Radiology

In brief: Dodged a bullet

Persistent Trigeminal art.
is associated with aneurysm in 14%, likely on a congenital basis. If one does not exist, it is unlikely to develop. http://thejns.org/doi/abs/10.3171/jns.1971.35.5.0601 Association does not prove causality, but we don't understand the embryology well enough to know the causes of aneurysms.

In brief: Dodged a bullet

Persistent Trigeminal art.
is associated with aneurysm in 14%, likely on a congenital basis. If one does not exist, it is unlikely to develop. http://thejns.org/doi/abs/10.3171/jns.1971.35.5.0601 Association does not prove causality, but we don't understand the embryology well enough to know the causes of aneurysms.
Dr. Paul Garrett
Dr. Paul Garrett
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