FIG 2. Case 1, a 52-year-old man with a giant basilar tip aneurysm.

A and B, Giant basilar tip aneurysm partially occluded with coils. Detachment of additional coils failed.

B and C, Situation after bypass from the external carotid artery to the right P2 and bilateral vertebral artery occlusion. Only a small part of the neck is opacified with contrast material. Six months later, the patient died of autopsy-confirmed rebleeding.