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Types of Basilar Artery Syndrome: Clinicoradiologic CorrelationSection of Neurology, Department of Internal Medicine, Cathay General Hospital, Taipei, Taiwan, R.O.C.
Section of Neurology, Department of Internal Medicine, Cathay General Hospital, Taipei, Taiwan, R.O.C.
Section of Neurology, Department of Internal Medicine, Cathay General Hospital, Taipei, Taiwan, R.O.C. Twenty-two patients with ischemic stroke, as a single event, in the territory of basilar artery (BA) are reported. On the basis of the findings from computerized tomography (CT) and clinico-radiologic features, the authors propose that this heterogeneous entity—the basilar artery (BA) syndrome—can be divided into five subtypes. Type 1 (complete type), characterized by infarctions in the whole territory of BA, is incompatible with life; type 2, with extensive brain stem infarct, may result in a locked-in state; and type 3, with infarctions in part of the BA territory (incomplete form or "partial syndrome") may have a more variable clinical outcome. However, type 4, with a top of the BA syndrome, and type 5, with negative CT BA syndrome (angiographically verified), are often more benign. Although initial CT scanning may infrequently be unrevealing, serial and follow-up CT scannings have proven their usefulness in the majority of cases as a noninvasive tool, in contrast to cerebral angiography, for predicting the short-term prognosis of BA syndrome.
Angiology, Vol. 44, No. 5,
368-375 (1993) |
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