Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is stable volume loss at the right lower lung compatible with prior right lower lobectomy . Bibasilar linear opacities are consistent with chronic scarring . No focal consolidation , pleural effusion or pneumothorax is present . Old right rib resection is unchanged . The cardiomediastinal silhouette is unchanged .
    OUTPUT:
    
No evidence of pneumonia .