Vascular Malformations Smith 12-12-2012 - Inova Health System
Vascular Malformations Smith 12-12-2012 - Inova Health System
Vascular Malformations Smith 12-12-2012 - Inova Health System
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2/8/20<strong>12</strong><br />
<strong>Vascular</strong> <strong>Malformations</strong><br />
• Arteriovenous malformation (AVM)<br />
– Classic<br />
– Dural arteriovenous fistula (dAVF)<br />
– Vein of Galen Malformation (VOG)<br />
• Developmental venous anomaly<br />
(DVA)<br />
• Cavernous malformation<br />
• Capillary telangiectasia<br />
<br />
<br />
<br />
<br />
<br />
<br />
Classic AVM<br />
• Arteriovenous shunting & no<br />
intervening capillary bed<br />
– Enlarged feeding artery<br />
– Nidus<br />
– Early draining vein/ varix<br />
• Congenital<br />
– Usually neural tissue in between<br />
• Occur anywhere in brain or spinal<br />
cord<br />
• 98% solitary<br />
– Multiple AVMS usually syndromic:<br />
• Hereditary hemorrhagic<br />
telangiectasia (HHT)<br />
• Cerebrofacial arteriovenous<br />
metameric syndromes (CAMS)<br />
AVM<br />
T2<br />
Nidus =<br />
Conglomeration of<br />
numerous AV shunts &<br />
dysplastic vessels<br />
2
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