Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . There is mild tortuosity of the descending aorta . Mediastinal and hilar contours otherwise are unremarkable , and the lungs are clear . No pleural effusion or pneumothorax is present . There are no acute osseous abnormalities . The pulmonary vascularity is normal .
    OUTPUT:
    
No acute cardiopulmonary process .