Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size , hilar , and mediastinal contours are normal . The lungs are clear and well expanded without focal consolidation , pleural effusion , or pneumothorax . Left hemidiaphragmatic pleural calcifications are unchanged . Calcified aortic arch is unchanged .
    OUTPUT:
    
No acute cardiopulmonary process .