Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The aortic knob is calcified . Mediastinal and hilar contours are within normal limits . Lungs are clear . Mildly elevated right hemidiaphragmatic contour is unchanged . No pleural effusion or pneumothorax is seen . No acute osseous abnormalities are detected .
    OUTPUT:
    
No acute cardiopulmonary abnormality .