Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with prior radiographs on ___ , there is no significant change . A left chest wall pacemaker is appropriately positioned , with leads terminating in the right atrium and right ventricle . There is no pneumothorax . The lungs are clear without focal consolidation or pleural effusion . The cardiac and mediastinal silhouettes are unchanged .
    OUTPUT:
    
Appropriately positioned left chest wall pacemaker with leads terminating in the right atrium and right ventricle . No pneumothorax .