We reported a rare case of bilateral subclavian steal syndrome (SSS) secondary tosyphilitic arteritis in a 45-year-old women, and the value of Computertomography angiography (CTA) and colour doppler ultrasonagraphy (CDU) inthe diagnosis of SSS. This patient presented with recurrent dizziness duringmanual work. Physical examination found no neurological deficits but bilateralradial pulseless and unavailable blood pressure in both arms. CTA showedbilateral origin of subclavian artery was occluded, transcranial cerebral dopplerand CDU indicated the blood flows from external arteries to distal subclavianarteries compensatorily to supply arms. The serum rapid plasma regain test,Venereal Disease Research Laboratory, and treponemal antibodies were allpositive. Bilateral SSS is rare, CTA and CDU are useful approaches to diagnoseSSS and assess the compensatory degree. This case also reminds us that vascularsyphilis should be considered in younger patients with SSS.
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