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Parietal and Occipital AVMs

Last Updated: July 11, 2019

Parietal AVM: Managing Disturbing White matter Feeders

Operative Anatomy

The parietal and the occipital lobes are neighbors with arbitrary boundaries. At their medial aspect, they are separated by the parieto-occipital sulcus. At their lateral surface, there is no real fissure or sulcus to demarcate them, but they may be separated arbitrarily by an imaginary extended Sylvian fissure line.

Because of such an intimate neighborhood, the vasculature of these two lobes is shared and interrelated. Therefore, arteriovenous malformations (AVMs) involve these lobes synchronously. As a result, I will consider these two lobes as a single unit during discussion of AVM excision.

All three major cerebral arteries and their branches supply the parietal and occipital lobes, including the middle cere...