FINAL REPORT
 HISTORY:  Right pleural pigtail catheter placement status post ascending aortic replacement, here to evaluate for pneumothorax.  
 
 COMPARISON:  Chest radiograph last performed on ___. 
 
 Technique:  Portable upright AP radiograph of the chest.  
 
 FINDINGS:
 
 Calcification of the aortic knob and descending thoracic aorta is re
