Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . No prior . There is subtle opacity silhouetting the inferior left heart border with configuration most suggestive of epicardial fat . Mild biapical scarring is noted . Elsewhere , the lungs are clear . Costophrenic angles are sharp . Cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
No acute cardiopulmonary process .