In this procedure, the provider removes a portion of skull bone and resects an arteriovenous malformation, AVM, from the dura mater of the brain, a thick outer covering of the brain. This is surgery for a complex AVM, larger than 3 cm, with possible deep venous drainage, meaning the AVM is involved with the main conduits that drain blood from the brain, which increases risk of bleeding, or the involvement of the cortex areas that relate to sense, speech, and language.
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