Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged with unfolding of the thoracic aorta . Hilar contours are unremarkable . There is no pulmonary edema . Lateral view is somewhat limited by respiratory motion . Lungs are grossly clear . Pleural surfaces are clear without effusion pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary abnormality .