Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: New vertical lucencies are seen projecting over the right mediastinum extending upwards into the lateral neck consistent with free air in the soft tissues . Heart is top normal size , and cardiomediastinal contours are stable . Lungs are clear . No significant pleural effusions and no pneumothorax .
    OUTPUT:
    
Air is seen within the right mediastinum extending upwards into the soft tissues of the neck laterally . Given the history , this would be concerning for esophageal perforation .