Epidemiology

The prevalence of cerebral arteriovenous malformation (AVM) is 15/100,000.[17]

The overall incidence is 1.12 to 1.34/100,000 per year.[18][19]​ Of these, 79% (0.89/100,000) are asymptomatic and 21% (0.23/100,000) present with seizures or intracerebral hemorrhage (ICH).[18] Cerebral AVMs commonly present in the 3rd or 4th decade of life.[20] AVMs are the most common cause of spontaneous intracerebral hematomas in young adults.[21] The risk of bleeding is highest in the first year following a bleed, and 2% to 4% per annum thereafter.[22][23][24] Intracerebral hematomas are common and account for 10% to 30% of all strokes.[25] Of the numerous underlying causes, AVMs account for 4% of all ICHs.[25]

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