RESUMO
Determining of epidemiologic and angiographic findings in 100 patients with brain AVM. 100 patients with clinical and neurological symptoms and CT and MRI findings which had brain AVM after four vessel angiography, was selected. The peak incidence of clinical symptoms presentation was second decade and there was mild predominancyof male sex [59%]. Clinical findings in order of prevalence were brain hemorrhage, headache, seizure and motor deficit. In brain CT scan the most common finding was heterogeneous density mass and mass with intracranial hemorrhage. In angiography, most AVMs were grade IV that most of them had one feeding artery and two draining veins. In 10% of cases there was only superficial draining vein. In 6%, AVMs was coexistent with aneurysm. In most cases, there were patent anterior and posterior communicating arteries. Location of AVMs in eloquent and non - eloquent area of brain was equal. The most common location was parietal lobe. ICH is more than IVH or SAH. Parietal lobe is the most common site for these AVMs in our study. Most of them are in grade IV Spetzler and Martin