Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are normal . Minimal atherosclerotic calcifications are noted at the aortic knob . Lungs are clear . No focal consolidation , pleural effusion or pneumothorax is seen . Clips are noted in the right upper quadrant indicating prior cholecystectomy . No acute osseous abnormalities seen . There are mild degenerative changes noted in the imaged thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .