Fig 2. Case 4. Images of a 33-year-old man with a dissecting aneurysm of a left AICA-PICA configuration.

A, Angiogram shows dissecting aneurysm arising from a hemispheric branch of a left AICA-PICA (arrow).

B, Angiogram obtained 3 months after embolization shows reopening of the aneurysm (arrow).

C and D, Selective test occlusion by using a GDC coil (arrow) shows distal filling via collaterals (arrowhead, D).

E, Selective injection to the PICA shows the location of the GDC coils used for the test occlusion (arrow).