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颈动脉狭窄到一定程度可以有症状,但是有的病人也可能症状较轻或完全没有症状。美国多中心研究发现,有过一过性脑缺血的病人,一年内发生脑卒中的至少占10%,以后发生脑梗塞的平均每年为6%。这项研究的报
Carotid stenosis to some extent can have symptoms, but some patients may also have mild symptoms or no symptoms. A multicenter US study found that patients who had transient ischemic attack had at least 10% of strokes within a year and 6% of each subsequent cerebral infarction. The study reported