<unk>  <unk>  and<unk>  of<unk><unk>  dilations (VGAD) are the most frequent arteriovenous<unk>  in infants and fetuses.<unk> consist of a tangled mass of dilated vessels supplied by an enlarged artery. The<unk> increases greatly in size with age, although the mechanism of the increase is unknown. Dilation of the great cerebral<unk>  of<unk>  is a secondary result of the force of arterial blood either directly from an artery via an arteriovenous fistula or by way of a tributary<unk>  that receives the blood directly from an artery. There is usually a venous anomaly downstream from the draining<unk>  that, together with the high blood flow into the great cerebral<unk>  of<unk>  causes its dilation. The right sided cardiac chambers and pulmonary arteries also develop mild to severe dilation.
Vein of Galen aneurysmal malformations
Central nervous system cavernous hemangioma
Cavernous venous malformation
Cerebral arteriovenous malformation
Arteriovenous malformation
Infectious intracranial aneurysm
Duret haemorrhages
Cirsoid aneurysm