Dural AV fistula
Findings:
Axial PDWI shows abnormal flow voids along pial surface
of cerebellum. DSA shows vascular malformation fed by ECA branches and
draining in region of Vein of Galen/ straight sinus via pial veins over
cerebellar hemisphere. Transvenous coil embolization performed.
Discussion:
This type of dural AV fistula is at high risk for hemorrhage
due to pial venous drainage. Inferior frontal dural AVFs are also at high
risk for hemorrhage.