Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated suggestive of underlying chronic obstructive pulmonary disease . A focus of linear scarring is again noted in the right middle lobe . Otherwise , the lungs are clear with no evidence of a consolidation , effusion , or pneumothorax . Cardiomediastinal silhouette is normal . Atherosclerotic calcifications are noted at the aortic arch . No acute fractures are identified .
    OUTPUT:
    
1 . A focus of linear opacity at the right middle lobe is suggestive of scarring . No evidence of pneumonia . 2 . Hyperinflated lungs are suggestive of chronic obstructive pulmonary disease .