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Embolism in Acute Middle Cerebral Artery Stenosis Neurol 56:497-501, Segura,T.,et al, 2001 See this aricle in Pubmed Article Abstract MCA stensoses were found in 29 patients (7%), although in only 20 patients (5%) was the stenosis symptomatic. Microembolic signals were detected in five of 14 symptomatic stenoses (36%) monitored at the acute phase, but none were found in t he chronic phase or in asymptomatic stenosis. Despite one third of symptomatic patients having had a further source of emboli, microembolic signals were detected only distally to the MCA stenosis. In the symptomatic group, 25% of stenoses had completely disappeared 6 months after stroke. Microembolic signal detection at the acute phase was associated with the subsequent disappearance of the stenosis. The frequency of symptomatic MCA stenosis in acute ischemic stroke was 5% in the population studied. Many stenoses are transient, and microembolic signals are often detectable at the poststenotic segment in the acute phase. The origin of at least 25% of symptomatic acute MCA stenoses may be embolic rather than atherosclerotic.

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(click to filter results - removes previous filter) cerebral embolism cerebrovascular accident cerebrovascular accident,etiology middle cerebral artery territory infarction middle cerebral artery,emboli to middle cerebral artery,stenosis of

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