Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Lungs are hyperinflated consistent with history of COPD . Streaky lower lung opacities most compatible with atelectasis though difficult to exclude a subtle pneumonia . No large effusion or pneumothorax . Cardiomediastinal silhouette is stable . Stable hilar prominence suggesting pulmonary hypertension . Bony structures are intact .
    OUTPUT:
    
1 . Streaky lower lung opacities likely reflect atelectasis though difficult to exclude pneumonia . 2 . COPD with hilar prominence suggestive of pulmonary arterial hypertension .