Isolated oculomotor paralysis. The product of saccular and fusiform aneurysms of the basilar artery
J. D. Trobe, J. S. Glaser and R. C. Quencer
Isolated oculomotor paralysis was produced by an unsuspected saccular
basilar aneurysm in one case and fusiform basilar aneurysm in another. The
chronicity of symptoms and lack of pain were misleading features. The
saccular basilar aneurysm, which has an untreated mortality of 50% to 80%,
was visualized best with selective angiography and successfully clipped
intracranially. The fusiform basilar aneurysm, part of a diffuse
atherosclerotic ectasia of all basal intracranial arteries, indented and
displaced the upper brain stem. A common ophthalmologic sign of posterior
communicating aneurysms, oculomotor paralysis has not been documented
frequently with basilar aneurysms.
