{Reference Type}: Journal Article {Title}: Locked-in Syndrome Due to Meningovascular Syphilis: A Case Report and Literature Review. {Author}: Yokota Y;Ishihara M;Ninomiya S;Mitsuke K;Kamei S;Nakajima H; {Journal}: Intern Med {Volume}: 0 {Issue}: 0 {Year}: Oct 2021 19 {Factor}: 1.282 {DOI}: 10.2169/internalmedicine.8269-21 {Abstract}: We herein report a 46-year-old man presenting with locked-in syndrome secondary to meningovascular syphilis. Brain magnetic resonance imaging (MRI) demonstrated multiple acute infarctions in the left ventromedial pons, right basis pontis, and left basal ganglia. His locked-in syndrome was hypothesized to have been caused by thrombosis of the small paramedian branches of the basilar artery due to syphilitic arteritis. This is a unique case of bilateral ventromedial pontine infarction caused by meningovascular syphilis that presented as locked-in syndrome. Meningovascular syphilis should be included in the differential diagnosis of uncommon stroke, particularly in young men.