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Background: The correlation between angioarchitecture and clinical presentation of brain arteriovenous malformation (bAVM) remains a subject of debate.  Objective: The main purpose of the present study was to assess the correlation between angioarchitectural characteristics of bAVM and clinical presentation.  Methods: A retrospective review of all consecutive patients presenting a bAVM who underwent a cerebral angiography at Beneficencia Portuguesa Hospital in São Paulo between January 2006 and October 2016 was carried out. Patients were divided in five groups: group 1 - hemorrhage; group 2 - seizure; group 3 - headache; group 4 - progressive neurological deficits (PND); group 5 - incidental).  Results: A total of 183 patients were included, with group 1 comprising 56 cases, group 2 49 cases, group 3 41 cases, group 4 28 cases, and group 5 9 cases. Regarding hemorrhage presentation, a statistical correlation was observed with female gender (P &lt; 0.02), Spetzler-Martin 3B (P &lt; .0015), and lesions with low flow (P &lt; 0.04). A positive association was found between group 2 and age less than 36 years (P &lt; 0.001), male sex (P &lt; 0.018), presence of superficial lesions not classified as SM 3B (P &lt; 0.002), presence of venous ectasia (p &lt;0.03), and arterial steal phenomenon (P &lt; 0.03). Group 4 was associated with older age (P &lt; 0.01).  Conclusions: Angioarchitectural characteristics can be correlated with some clinical presentations as well as with some clinical data, making it possible to create predictive models to differentiate clinical presentations.

Correlation between angioarchitectural characteristics of brain arteriovenous malformations and clinical presentation of 183 patients