Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior chest radiograph , chronic cardiomegaly and a tortuous aorta are unchanged . Patient is post median sternotomy and aortic valve replacement , with intact median sternotomy wires . No new focal consolidation , pleural effusion , or pneumothorax .
    OUTPUT:
    
1 . No new focal consolidation . 2 . Persistent chronic cardiomegaly .