Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are lower than in ___ . Linear bilateral opacities are unchanged from ___ , consistent with scarring . Mediastinal contours , hila and cardiac silhouette are stable from ___ . No pneumothorax or pleural effusion . No osseous abnormality within the limits of plain radiography .
    OUTPUT:
    
1 . No osseous abnormality within the limits of plain radiography . 2 . Stable mediastinum from ___ . If concern for dissection , CTA chest should be performed .