<prompt> Which of the following is the most common feature of Aoitis on chest x-ray?Calcification of ascending aoaCalcification of descending aoaCalcification of pulmonary aeryFocal oligemia  <response>: The ascending aoa is the most common site for calcification in aoitis. Calcification in the ascending aoa is most characteristic of syphilitic aoitis. Ref: Harrisons Principle of Internal Medicine, 16th Edition, Page 1485; Textbook of Radiology and Imaging By David Sutton, 7th Edition, Pages 312-14 