Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The mediastinal and hilar contours are unchanged , with the aorta mildly tortuous . Pulmonary vascularity is normal and the lungs are clear . No pleural effusion or pneumothorax is present . Clips in the upper abdomen denote prior cholecystectomy . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary process .