Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is similar mild to moderate relative elevation of the right hemidiaphragm . Lungs are also overall low in volume . Opacity along the right hemidiaphragm is consistent with unchanged atelectasis associated with the right hemidiaphragm . A previously noted opacity in the right upper lobe has resolved . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease .