You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Which of the following is the most common feature of Aoitis on chest x-ray? and explain in detail?
The ascending aoa is the most common site for calcification in aoitis. Calcification in the ascending aoa is most characteristic of syphilitic aoitis. Ref: Harrison's Principle of Internal Medicine, 16th Edition, Page 1485; Textbook of Radiology and Imaging By David Sutton, 7th Edition, Pages 312-14