Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post CABG and aortic valve replacement . Sternotomy wires are intact . The lungs are well expanded , with no focal opacities . Mild vascular congestion with upper redistribution is seen . Moderate cardiomegaly is unchanged . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Mild vascular congestion on the background of stable moderate cardiomegaly . No evidence of pneumonia .