Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left chest wall vagal nerve stimulator is again seen . This obscures portion of the left midlung . Where seen , the lungs are clear . There is no pneumothorax . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities identified .
    OUTPUT:
    
No acute cardiopulmonary process . If desired , dedicated rib series can be performed .