Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The previously seen mediastinal widening is substantially improved . There are moderate left and right pleural effusions . The lungs are grossly clear . The cardiomediastinal silhouette and hilar contours are within normal limits . There is no pneumothorax identified .
    OUTPUT:
    
Mediastinal widening is substantially improved with moderate left and right pleural effusions .