Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal with mild tortuosity of the thoracic aorta . Hilar contours are unremarkable . Lungs are clear . There is no pleural effusion or pneumothorax . There is mild elevation of the left hemidiaphragm .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Mild elevation of the left hemidiaphragm .