RESUMO
Cerebral arteriovenous malformation (AVM) is a complex network of vascular channels consisting of arterial feeders, a nidus and enlarged venous drainage. AVMs usually increase in size with time, but may rarely obliterate; spontaneous angiographic regression occurs in less than 1.5% of cerebral AVMs. Several causes of spontaneous regression have been postulated such us hemodynamic alterations due to hemorrhage, hypercoagulability, atherosclerosis, and thromboembolism from associated aneurysms. In this report we describe a case of cerebral hemorrhage due to left fronto- parietal AVM with predominant middle cerebral artery and anterior cerebral artery feeders, minor left external carotid artery feeders, mixed pial-dural AVM – Spleitzer Martin Grade 5