Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Faint bibasilar opacities , similar compared to ___ , could be scarring from prior pneumonia . This radiograph neither suggests nor excludes the diagnosis of chronic pulmonary emboli . The cardiomediastinal silhouette and hila are normal . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Faint bibasilar opacities persist . No change from ___ .