Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . Midline sternotomy wires and mediastinal clips are noted compatible with prior CABG . The heart remained slightly enlarged . There is mild pulmonary interstitial edema and engorged hila . There is no effusion or pneumothorax . No definite sign of pneumonia . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Mild pulmonary edema with stable cardiomegaly .