Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are within normal limits . There is dense calcification of the aortic knob . Lungs are well expanded and clear . Pulmonary vasculature is normal . There is no focal consolidation , pleural effusion or pneumothorax . Cholecystectomy clips are noted in the right upper quadrant of the abdomen .
    OUTPUT:
    
No acute cardiopulmonary process .