Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to the prior examination dated ___ , there has been no relevant interval change . The patient 's known , extensive right hilar and paramediastinal mass is unchanged in appearance . There is no new , focal consolidation , pleural effusion , pneumothorax , or pulmonary edema . The cardiomediastinal silhouette is unchanged in appearance .
    OUTPUT:
    
Stable appearance of the chest .