Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest are compared to previous exam from ___ . Linear opacity in the right mid lung is most suggestive of potentially scarring . The lungs are otherwise clear . There is no pneumothorax or pleural effusion . Multiple old right lateral rib fracture deformities are noted . Left vagal nerve stimulator is seen with device overlying the left mid lung . Cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
No acute cardiopulmonary process .