Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left chest wall pacing device is noted . The lungs are clear . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities . Median sternotomy wires and mediastinal clips are noted . Degenerative changes noted at the acromioclavicular joints bilaterally .
    OUTPUT:
    
No acute cardiopulmonary process .