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1 Neuroradiological Service, Ospedale Civile, Padova, Italy.
2 Institute of Neurosurgery, University of Padova, Italy.
3 Division of Neurosurgery, Ospedale S. Maria Nuova, Florence, Italy.
Four cases of a peculiar cerebral vascular abnormality, consisting of hypoplasia and stenosis of the internal carotid artery, often bilateral, and of an unusual pseudoangiomatous cerebral circulation, are reported.
Such a condition, originally found in Japanese patients only, has an undetermined cause.
The information obtained through clinical and angiographic studies in these 4 cases seems to favor the hypothesis of a congenital and malformative origin of this vascular abnormality.
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