Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest . Low lung volumes are again seen . Vague opacity projects over the anterior right 2nd rib compatible with healing fracture seen on prior CT scan . The lungs are otherwise clear . Cardiac silhouette is slightly enlarged but likely accentuated due to low lung volumes . Left chest wall single lead pacing device is again noted .
    OUTPUT:
    
No acute cardiopulmonary process .