Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is mild diffuse interstitial opacities likely representing interstitial edema . The heart remains slightly enlarged . Median sternotomy wires unchanged in position compatible with prior CABG . No evidence of pneumonia , pneumothorax or pleural effusions . No acute osseous abnormalities .
    OUTPUT:
    
Mild interstitial pulmonary edema . Stable cardiomegaly .