Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild asymmetric likely pleural thickening right greater than left , has not substantially changed since ___ and likely benign . The lungs are otherwise clear . The cardiomediastinal silhouette is unchanged . No pleural effusions or pneumothorax .
    OUTPUT:
    
No unfavorable change . Within the limitations of chest radiograph , no malignancy in the thorax .