Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest . Left chest wall single lead pacing device is again seen . The lungs are clear without consolidation , effusion or pneumothorax . Cardiac silhouette is mildly enlarged as on prior . No acute osseous abnormality is detected . Old healed right posterior rib fractures again identified .
    OUTPUT:
    
No acute cardiopulmonary process .