A<unk>  <unk>  or Malformation, is an abnormal direct connection (fistula) between a meningeal artery and a meningeal vein or<unk>  venous sinus.
Dural arteriovenous fistula
Arteriovenous fistula
Pseudoaneurysm
Developmental venous anomaly
Dural ectasia
Cavernous venous malformation
Subungual hematoma
Angiofibroma of soft tissue