Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . Left chest wall single lead pacing device is again noted in unchanged position . The lungs are clear of focal consolidation , effusion or pulmonary vascular congestion . The cardiac silhouette is mildly enlarged , similar to prior . No acute osseous abnormality detected .
    OUTPUT:
    
No acute cardiopulmonary process .