Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low . No confluent consolidation is identified . There are subtle interstitial opacities which may reflect early heart failure . No pneumothorax is identified . Mediastinal and hilar contours are within normal limits . Apparent enlargement of the cardiac silhouette is likely secondary to the AP technique .
    OUTPUT:
    
Mild interstitial prominence suggestive of early heart failure in the appropriate clinical setting .