Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low , resulting in bronchovascular crowding . No confluent consolidation is identified . There is mild pulmonary vascular congestion , though no overt interstitial edema . No pleural effusion is evident . Mediastinal and hilar contours are within normal limits . Moderate enlargement of the cardiac silhouette is unchanged from prior examination . There is elevation of the right hemidiaphragm , similar to prior . No pneumothorax is identified .
    OUTPUT:
    
1 . Unchanged moderate cardiomegaly . 2 . Mild vascular congestion , though no interstitial edema