Multiple cerebral aneurysms associated with aortitis syndrome--case report.

A 48-year-old female presented with four aneurysms in the anterior half of the circle of Willis associated with aortitis syndrome. All the aneurysms were successfully clipped. In general, intracranial hemodynamic change, due to stenosis or occlusion of carotid arteries, is considered to initiate aneurysm growth in the vertebrobasilar system in this syndrome, but renal hypertension was probably involved in our patient. Careful screening for multiple aneurysms, even in the anterior circulation, should be undertaken in patients with aortitis syndrome who present with an aneurysm.