Fig 2. Patient 6.

A, Native radiogram of right external carotid arteriogram in lateral projection reveals a fistulous CHVM supplied by the superficial temporal artery and collateral supply by ipsilateral middle meningeal and occipital arteries.

B, The inflated HyperForm balloon is visible (white arrows) on the roadmap capture in lateral projection obtained during embolization; note the retrograde filling of the middle meningeal and occipital collateral supply.

C, Postembolization ipsilateral external carotid arteriogram in the same projection demonstrates no evidence of residual arteriovenous shunt surgery.