AVM
Intramedullary (also known as type II or glomus-type AVM) Pial Epidural Intra- and extramedullary (also known as type III, intradural-extradural, juvenile AVM, or metameric AVM)
AVF
Pial AVF (also known as type IV, spinal cord AVF, ventral intradural AVF, or perimedullary AVF)
Small Large Giant
Dural AVF (also known as type I or dorsal intradural AVF) Epidural AVF (also known as extradural AVF)
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