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 aortic knob calcifications again noted . The pulmonary vascularity is normal and the lungs are clear . No pleural effusion , focal consolidation , or pneumothorax is present . Anterior osteophyte formation is noted within the imaged thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .