The recovery and clinical prognosis of patients with cerebrospinal vascular malformations depends primarily on the presence or absence of bleeding, lesion size, and surgical complications.
Some small cerebral arteriovenous malformations without bleeding can be asymptomatic for life, and those that have been surgically removed can be spared the risk of rebleeding, but there may be neurological sequelae, and vascular malformations that have bled may have residual motor limitations, confusion and memory impairment.
Over time, some of the function may improve with treatment of the disease, or even return to full normal, but a longer recovery process is required, which may take weeks, months or years.