Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A small amount of likely pneumomediastinum and possible pneumothorax seen on the prior CT examination is not evident on this study . On the current examination , no evidence of pneumothorax or pneumomediastinum is identified . No focal opacity to suggest pneumonia is seen . No pleural effusion or pulmonary edema is present . The cardiomediastinal contours are normal .
    OUTPUT:
    
No radiographically evident pneumomediastinum or pneumothorax on the current examination .