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Periventricular AVMs

Last Updated: September 28, 2018

Posterior Callosal (Splenial) AVM

Ventricular and periventricular arteriovenous malformations (AVMs) arise from the ependymal surface of the ventricular system and involve the choroid plexuses, as well as the subcortical structures that form the walls of the ventricular system.

Resection of ventricular lesions is different from resection of parenchymal AVMs because less perinidal dissection is necessary. This lack of parenchymal support or buttress is theorized to predispose these types of AVMs to a higher risk of hemorrhage, and therefore a more aggressive surgical philosophy may be justified.

A thorough understanding of the anatomic structures and landmarks within and around the ventricles is crucial for safe and complete resection of these complex lesions. Control of the deep white...