Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Atherosclerotic calcifications are seen at the aortic knob . Mediastinal and hilar contours are normal . Pulmonary vasculature appears normal . Lungs are clear . No pleural effusion or pneumothorax is present . Moderate degenerative spurring is seen the imaged thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .