Syphilitic arteritis involving the origin of the cervical internal carotid artery.

We report a case of meningovascular syphilis in a young adult woman presenting with left hemiparesis due to near occlusion of proximal cervical internal carotid with subacute middle cerebral artery territory infarction. Diagnosis was made on the basis of positive serum, and spinal fluid serology for syphilis, carotid Doppler, and magnetic resonance angiography, as well as improvement after intravenous penicillin therapy. In this case report, the imaging findings were described and related literature was reviewed.