Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs hyperinflated , consistent with known emphysema . Minimal lower lobes nodular opacities may reflect resolving pneumonia or atelectasis . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is top normal in size . Unfolded aorta in this patient with known aortic dissection .
    OUTPUT:
    
Minimal lower lobes nodular opacities may reflect resolving pneumonia or atelectasis .