Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . Midline sternotomy wires are again noted . The left IJ central venous catheter has been removed . There is improved aeration in the lung bases as compared with the prior exam . The heart is markedly enlarged , which appears grossly stable compared with prior exam . There is no sign of pneumonia or overt CHF . Bony structures are intact . Aortic calcifications noted .
    OUTPUT:
    
Stable cardiomegaly without signs of pneumonia or CHF .