Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest is compared to previous exam from ___ . Again seen is right apical scarring medially with deviation of the trachea . Retrocardiac linear opacity again suggestive of scarring . Elsewhere , lungs are clear . Cardiomediastinal silhouette is stable . Osseous and soft tissue structures are grossly unremarkable . Prior , healed right lateral rib fracture seen inferiorly .
    OUTPUT:
    
No acute cardiopulmonary process .