Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated . There is no focal parenchymal opacity . There is tenting of the left hemidiaphragm as well as leftward displacement of the mediastinum likely due to postradiation retraction . No pleural effusion or pneumothorax is present .
    OUTPUT:
    
No evidence of acute cardiopulmonary process .