This document discusses cardiovascular syphilis, which can affect the heart, aorta and other blood vessels. It outlines the epidemiology, clinical features, investigations, treatment, prognosis and follow up for cardiovascular syphilis. While rare today due to penicillin treatment, syphilis can cause complications like aortic aneurysms in the heart, aorta and other large blood vessels up to 40 years after initial infection. Proper treatment and follow up is important as untreated syphilitic aneurysms have a high 2-year mortality rate.