Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac stents appear unchanged . The heart is at the upper limits of normal size . The aortic arch is calcified . Background coarsening of lung markings at the each lung apex suggests minor unchanged subpleural scarring . Patchy opacity in the right costophrenic angle suggests minor unchanged scarring . The lungs are hyperinflated . There is no pleural effusion or pneumothorax . Bony structures are unremarkable .
    OUTPUT:
    
Hyperinflation . No evidence of acute disease .