MRI imaging plays a critical role in the evaluation and diagnosis of brain arteriovenous malformations.

This case demonstrates classic MRI findings of an AVM ^1-4 :

• tightly packed masses or "honeycomb" flow voids on T1 and T2 scans

• brain parenchyma is gliotic and hyperintense on T2WI and FLAIR

• common presence of hemorrhagic foci

• T2* sequences show "blooming" foci within and around AVMs and adjacent pia siderosis