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Together with an increasingly aging world population there is also an increasing prevalence of atherosclerosis. Renal artery stenosis (RAS) is one of the systemic manifestations of atherosclerosis. Its incidence is about 15%-35%.1 RAS accounts for 5%-27% of all patients with end-stage renal disease (ESRD).2 Patients with renal dysfunction resulting from RAS are at risk of death from cardiovascular disease and ESRD.3