Prenatal diagnosis of intracranial pial arteriovenous fistula Diagnóstico pré-natal de fístula arteriovenosa pial

The vast majority of cerebral vascular malformations reported in the antenatal literature are aneurysmal malformations of the vein of Galen. Other types of intracranial vascular malformations are exceptional in fetuses. The authors present a case of prenatal diagnosis of intracranial pial arteriovenous fistula, not involving the vein of Galen and not showing abnormal intracranial anatomic features, or other sonographic findings.