Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . The lung volumes are low . No focal opacity , pleural effusion or pneumothorax is seen . The cardiac contours are unchanged . The aortic contour is heavily calcified . A pacer with leads in the right atrium and right ventricle is unchanged .
    OUTPUT:
    
No evidence of pneumonia .