Asymptomatic carotid stenosis and stroke risk – Authors' reply

Anne Abbott emphasises our finding that ipsilateral stroke risk is dependent on the degree of asymptomatic carotid artery stenosis.1 states this association was reported previously in ACSRS study, which she an author.2 In fact, only a non-significant correlation towards increased with stenosis found but as we showed systematic review, other much earlier studies had already more convincing correlations.3,4 However, confusion subsequently spread by absence any such associations randomised controlled trials endarterectomy for patients stenosis.