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Silent stroke was observed in 13%of the 2,329 patients.Lacunes formed 79%, cortical lesions 14%,and border zone lesions 7%of all silent strokes. Silent lacunes were most often located in the basal ganglia and symptomatic lacunes most often in the corona radiata.Age,hypertension,and current cigarette smoking were related to the presence of silent stroke. Silent stroker was equally common in different types of transient ischemic attack,including transient monocular blindness.Residual symptoms of any kind were more common in patients with silent stroke than those without. Because only the sites of the silent stroke infarcts differed slightly from those of symptomatic infarcts and the frequency of vascular risk factors was similar to that of symptomatic infarcts,silent stroke may have the same bearing on future risk as known prior stroke. |
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CAT scan
CAT scan,abnormal
cerebrovascular accident
cerebrovascular accident,silent
cerebrovascular disease,risk factors in
transient ischemic attack
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