Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . Mediastinal and hilar contours are within normal limits . The pulmonary vasculature is normal . Lungs are clear . No pleural effusion or pneumothorax is seen . Mild elevation of the left hemidiaphragm is unchanged .
    OUTPUT:
    
No acute cardiopulmonary process .