Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are hyperinflated , compatible with COPD . Opacity in the left lower lobe is worrisome for infection . No pleural effusion or pneumothorax . Heart is normal size . No pulmonary edema . There are extensive aortic calcifications .
    OUTPUT:
    
Left lower lobe opacity raising concern for infection .