Infectious thoracic aortitis is a rare entity in the antibiotic era and usually appears in patients with prior aortic disease and/or associated infective endocarditis. Infected nonaneurysmal aorta will likely progress to mycotic aneurysm if left untreated. In most of the reports, infectious thoracic aortitis presents with a mycotic aneurysm. We report the case of a patient with a nonaneurysmal infectious thoracic aortitis, probably secondary to purulent meningitis, early diagnosed by transesophageal echocardiogram.