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Posterior Circulation Infarcts in Patients with Vertebrobasilar Dolichoectasia Stroke 29:653-659, Passero,S.&Filosomi,G., 1998 See this aricle in Pubmed Article Abstract More than half of the patients(24 of 40)had infratentorial infarcts, located mainly in the midpons.Sixteen patients had supratentorial lesions localized in the thalamus(n=8)or in the superficial arterial territory of the posterior cerebral artery(PCA;n=8).The diameter and height of the bifurcation of the BA were correlated with the location of the lesion(PCA territory versus BA territory),in that severe ectasia and vertical elongation of the BA were significantly more often observed in patients with infarcts in PCA territory than in patients with infarcts in territories supplied by branches of the BA.Comparison of VBD patients with and without stroke showed that the incidence of arterial hypertension and the degree of ectasia and lateral displacement of the BA were not significantly different in the two groups.Patients with stroke more often had atherosclerotic changes of the posterior circulation(P=.0006)and a higher degree of vertical elongation of the BA(P=.025).In patients with VBD,superimposed atheromatous changes of the posterior circulation may have an important role in precipitating ischemia.However,other factors related to the severity of the dolichoectasia also favor ischemia and in some cases are the only factors responsible.

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(click to filter results - removes previous filter) brainstem,infarction of cerebrovascular accident ectatic basilar artery pons,infarction of posterior cerebral artery territory infarction review article thalamus,infarction of transient ischemic attack vertebral-basilar insufficiency

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