Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate severe , but stable right hemidiaphragmatic elevation . Right pectoral cardiac pacer appears stable with leads terminating in the right atrium and right ventricle . The right lung volume remains low , but both lungs are clear . The cardiac contour is prominent . Aortic arch calcifications are noted . There is no pneumothorax , vascular congestion , or large pleural effusion . Kyphotic posture is unchanged , with diffuse osteopenia . Extensive aortic calcifications are present .
    OUTPUT:
    
No evidence of pneumonia .