Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP view of the chest demonstrates hyperinflated lungs with flattened hemidiaphragms . The lungs are otherwise clear and the cardiac , hilar , and mediastinal contours are normal . No pleural effusion or pneumothorax is seen .
    OUTPUT:
    
Hyperinflated lungs with no acute cardiopulmonary process