Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The aorta shows mural calcification . The lungs are hyperinflated as before suggesting COPD . Perihilar interstitial markings are again demonstrated but are stable from prior examination . No evidence of frank pulmonary edema or pulmonary vascular engorgement . Focal linear atelectasis or scarring is seen at the medial left base . There is no focal consolidation , pleural effusion or pneumothorax identified . Apical scarring is noted .
    OUTPUT:
    
COPD . No evidence of pneumonia or pulmonary edema .