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Stroke, Vol 20, 687-690, Copyright © 1989 by American Heart Association

ARTICLES

Positive platelet scintigram of a vertebral aneurysm presenting thromboembolic transient ischemic attacks

M Maruyama, T Asai, Y Kuriyama, T Sawada, J Ogata, T Nishimura and T Omae
Department of Internal Medicine, National Cardiovascular Center, Osaka, Japan.

We describe a patient with transient ischemic attacks secondary to a giant aneurysm who showed increased activity on platelet scintigrams at the origin of the left vertebral artery. This is assumed to be the first report of a presumed embolizing aneurysm with positive activity of labeled platelets. Platelet scintigraphy is useful for diagnosing transient ischemic attacks as being secondary to an aneurysm and was proved to provide direct evidence of a thromboembolic source in vivo.