Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are stable . There is no pleural effusion or pneumothorax . The lungs are hyperexpanded and clear without focal consolidation concerning for pneumonia . A 3 lead pacemaking device is present with leads terminating in the right atrium , right ventricle , and coronary sinus as expected .
    OUTPUT:
    
Appropriate position of pacemaker leads , as described above .