Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The lungs are mildly hyperinflated , suggestive of COPD . The lungs are clear without focal or diffuse abnormality . No pleural effusion or pneumothorax . The heart is of normal size with normal cardiomediastinal contours . No radiopaque foreign body . Thoracolumbar dextroscoliosis is S - shaped .
    OUTPUT:
    
Mild hyperinflation of the lungs , suggestive of COPD .