Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . The lungs appear clear and hyperinflated with upper lobe lucency compatible with known underlying emphysema . The heart is mildly enlarged . No large effusion or pneumothorax . Right apical pleural parenchymal scarring is noted . The aorta is tortuous and calcified . The bony structures appear intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
Severe emphysema with mild cardiomegaly . No signs of pneumonia .