Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are mildly hyperinflated and clear . Stable mild blunting of bilateral costophrenic angles are most consistent with scarring . No pleural effusion or pneumothorax . Heart size , mediastinal contour , and hila are unremarkable . Limited assessment of the upper abdomen is within normal limits . Visualized osseous structures are unremarkable without displaced rib fracture .
    OUTPUT:
    
1 . Mildly hyperinflated lungs can be seen in the setting of COPD and small airways disease . 2 . No displaced rib fracture . If persistent concern consider dedicated rib series for further evaluation .