Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest . There is superior traction of the left hilum . Subtle opacity projects over the left scapula in the region of the overlying cardiac lead . Findings are suggestive of underlying scarring . Elsewhere the lungs are clear . Cardiac silhouette is top - normal in size . For technique . No acute osseous abnormality seen , hypertrophic changes seen spine .
    OUTPUT:
    
No definite acute cardiopulmonary process . Findings suggestive of scarring in the left upper lung . Correlation with older films to document stability would be of use .