Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest demonstrate a fiducial marker adjacent to known left lower lobe mass which appears larger than on prior radiograph from ___ , but exhibits continued decreasing FDG - avidity on recent PET - CT from ___ . No pleural effusion or pneumothorax is present . Bibasilar fibrotic changes are stable . There is no subdiaphragmatic free air . The cardiomediastinal silhouette is stable . Right upper quadrant abdominal surgical clips are again seen .
    OUTPUT:
    
No evidence of subdiaphragmatic free air .