Multiple aneurysms of the vertebrobasilar system associated with fenestration of the vertebral artery

A rare case of multiple aneurysms of the vertebrobasilar system associated with fenestration of the intracranial vertebral artery is reported. A search of the world literature revealed 56 other cases of the vertebral artery fenestration, mainly in reports from Japan. Only 11 cases of this association with intracranial aneurysms were reported, and none of these aneurysms were located on the posterior circulation. Association of multiple vertebrobasilar aneurysms and vertebral artery fenestration is rare.