Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . The lungs appear hyperinflated and hyperlucent with flattened diaphragms suggestive of underlying COPD / emphysema . The heart is top - normal in size . No focal consolidation , effusion or pneumothorax is present . There is subtle prominence of the main pulmonary arterial mobile along the left mediastinal border . Please correlate for pulmonary arterial hypertension . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
1 . Emphysema without convincing signs of pneumonia . 2 . Top - normal heart size . 3 . Apparent enlargement of the main pulmonary artery which could indicate pulmonary arterial hypertension . Please correlate clinically .