Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Vagal stimulator is seen projecting over the left upper hemithorax . There are areas of bibasilar atelectasis / scarring . No focal consolidation , pleural effusion , or evidence of pneumothorax is seen . The cardiac and mediastinal silhouettes are stable . Evidence of multiple old right - sided rib fractures are again seen . No definite acute fracture is seen .
    OUTPUT:
    
No acute cardiopulmonary process .