Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear . There has been significant improvement in vascular congestion and mild interstitial pulmonary edema compared with the previous exam . The heart is mildly enlarged , unchanged from prior . Cardiomediastinal and hilar contours are otherwise unremarkable . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Mild cardiomegaly . No evidence of acute cardiopulmonary process .