Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Focal scarring and volume loss at right lung base is unchanged , consistent with sequela of previous surgery for lung cancer . No new opacity concerning for pneumonia is identified . There is right lateral costophrenic sulcus blunting , likely secondary to pleural thickening with possible small component of pleural fluid . Cardiomediastinal and hilar silhouette are normal size .
    OUTPUT:
    
No radiographic evidence of pneumonia .