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Giant AVMs

Last Updated: September 28, 2018

Resection of a Giant Temporo-Parietal AVM

Arteriovenous malformations (AVMs) pose a significant surgical challenge, and this challenge is accentuated when they are large. Although the distinction is subjective, the size of an AVM can augment the decision-making process regarding their appropriate management. A “giant” AVM is defined by microneurosurgeons as an AVM larger than 6 cm. Radiosurgeons often refer to giant AVM as those larger than either 5 cm or 40 cc. However, the implications of this distinction are universal in the sense that giant AVMs are more difficult to treat.

Giant cerebral AVMs are a rarely encountered subset of intracranial cerebrovascular disease, with an overall incidence of approximately 6% of all intracranial AVMs. 

Figure 1: This giant temporo-parietal AVM...