FIG 2. Case 2.

A, Carotid angiogram shows a direct CCF; the distal portion of the ICA is not opacified because of the high-flow shunt.

B, Right vertebral angiogram depicts the aneurysmal sac by collateral flow upon cross compression.

C, Carotid angiogram obtained just after the procedure shows that a detachable balloon completely occludes the shunt.

D and E, Angiograms obtained 3 months later reveal recurrence of the aneurysm (D), which is packed with coils (E)