Giant cerebral arteriovenous malformation

Discussion:

A small cerebral arteriovenous malformation (CAVM) can easily be missed on a non-contrast head CT. In this case, the CAVM was large enough to be detected and the clustered vessel wall calcifications certainly helped narrow down the differential diagnosis.

A small basilar tip aneurysm was also noted; there is an appreciated association between CAVMs and remote aneurysms.

Following detection of the CAVM, a head CT angiogram (CTA) was immediately performed, exquisitely detailing the CAVM.

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