Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs again demonstrate linear lucency along the anterior mediastinum and superior cardiac silhouette , best seen on lateral view . This is similar in appearance compared the prior chest radiograph , with any changes in configuration likely related to redistribution of existing air . No increased or additional lucency is identified . The lungs are again clear , without focal consolidation , pleural effusion , or pneumothorax . The visualized upper abdomen is unremarkable .
    OUTPUT:
    
Redemonstration of a small amount of pneumomediastinum , with a similar amount of air somewhat redistributed .