Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette is normal . The mediastinal contour is normal without evidence of widening . There are no pleural effusions , focal opacities , or pneumothorax . The hila and pleura are normal .
    OUTPUT:
    
No evidence of mediastinal widening or other signs of aortic dissection on plain film radiography however would recommend follow - up imaging if clinical suspicion remains high .