Systemic vascular changes in spontaneous occlusion of the circle of Willis.

Abstract

BACKGROUND AND PURPOSE We examined the presence of systemic etiologic factors causing vascular changes in so-called "spontaneous occlusion of the circle of Willis" (cerebrovascular moyamoya disease) to determine whether extracranial, as well as intracranial, vessels are involved in this disease. METHODS Histopathologic examination and morphometric… (More)

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