Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No large focal consolidation is identified . Known pulmonary nodules seen on prior CT chest are not clearly identified on this study . The cardiac silhouette is unchanged . There is slight prominence of the right perihilar region compatible with known mass , though dramatically decreased as previously observed . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No focal consolidation . Known pulmonary nodules and mediastinal mass better assessed on prior CT chest .