Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Re - demonstration of calcifications of the aortic knob . Cardiomediastinal silhouette and hilar contours are otherwise unremarkable . Lungs are clear . No pleural effusion or pneumothorax . Partial visualization of cervical fixation hardware . Stable mild elevation of the right hemidiaphragm .
    OUTPUT:
    
No acute cardiopulmonary abnormality .