Last Updated: September 28, 2018
The middle cerebral artery (MCA) tributaries feed the lateral aspect of the frontal lobe, whereas the anterior cerebral artery (ACA) branches supply the medial and basal surfaces of this lobe. These two arterial systems disproportionately supply frontal arteriovenous malformations (AVMs) based on the location of the nidus and its proximity to each of these vascular trees. The contributions of the MCA versus ACA territories to frontal AVMs should be understood preoperatively.
The main trunk of the MCA may branch in three different patterns: 1) bifurcation into superior and inferior trunks, 2) trifurcation into superior, middle, and inferior t...