Multiple embolic stroke due to aortic arch floating thrombus in latent tertiary syphilis

At admittance serological tests (RPR 1:25, TPPA 1:10240, IgM anti-Treponema Pallidum negative, total antibodies against Treponema pallidum >70.00), the absence of history and the absence of previous treatment with penicillin led to the diagnosis of latent syphilis.