Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperexpanded but clear . The cardiac silhouette is normal . The mediastinal silhouette shows evidence of a esophagectomy followed by esophagogastric anastomosis . No mediastinal free air is noted . The hilar contours and pleural surfaces are normal . No pleural effusion or pneumothorax is present .
    OUTPUT:
    
No radiographic evidence of mediastinal free air .