Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is top normal in size . There is tortuosity of the aorta . The mediastinal and hilar contours are within normal limits . There is atelectasis of the lung bases bilaterally . Lungs are otherwise clear . There are no pleural effusions , focal consolidations , or pneumothorax .
    OUTPUT:
    
No radiographic evidence of an acute cardiopulmonary process .