• Images in Neurosurgery

    Authors: Anthony C. Wang
    Khol D. Than
    Suresh Ramnath

    These photographs show the hypoglossal nerve traversing a fenestrated right vertebral artery, just proximal to the vertebrobasilar junction. The branching pattern is normal, with no aneurysms or arteriovenous malformations. Incidence of fenestration ranges from 0.23% to 1.95% for all vertebral/basilar arteries. Most fenestrations (>70%) are extracranial and occur at the C1-C2 level. Fenestration—which differs from duplication—is possibly a persistent segment of the embryonic hypoglossal or proatlantal intersegmental arteries. Most basilar fenestrations are in the proximal portion. Fenestrations are usually asymptomatic.



    Megan E. B. Foldenauer, PhD, CMI
    Holly A. Wagner, ELS

We use cookies to improve the performance of our site, to analyze the traffic to our site, and to personalize your experience of the site. You can control cookies through your browser settings. Please find more information on the cookies used on our site here. Privacy Policy