[Primary dural intracranial arteriovenous lesions].

Vascular lesions with arteriovenous shunts are a heterogeneous group of diseases composed of three distinct pathological entities: adult type dural arteriovenous fistula, dural sinus malformations with arteriovenous shunts and juvenile type of dural arteriovenous fistula. We review the imaging and clinical features of a series of 51 patients, 48 with adult type dural arteriovenous fistula and 3 with dural sinus malformations. It is emphasized the dynamic nature of these lesions and the role of the venous drainage type in the adult type of dural AVF and veno-oclusive phenomena in the pediatric dural diseases as major determinants of the clinical presentation, prognosis and treatment decision.