Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP view of the chest . The patient 's aortic dissection is better visualized on concurrent CT from today . There are aortic knob calcifications . There is no focal consolidation , pleural effusion or pneumothorax . There is moderate cardiomegaly that is stable . Median sternotomy wires are unchanged .
    OUTPUT:
    
Known aortic dissection is better assessed on concurrent CT chest from today . Clear lungs .