Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Marked elevation of the right hemidiaphragm is unchanged from the most recent prior study of ___ . A right pectoral pacemaker is unchanged with two leads terminating in the right atrium and right ventricle . The right lung volume remains low ; however , the lungs are clear without focal consolidation , pleural effusion or pneumothorax . The pulmonary vasculature is not engorged , and there is no overt pulmonary edema . The cardiac silhouette remains top normal in size but stable . The mediastinal contours are within normal limits with calcification of the aortic knob again seen . There is exaggerated kyphotic curvature of the thoracic spine with diffuse osteopenia .
    OUTPUT:
    
Stable appearance of the chest from ___ without evidence of pneumonia or heart failure .