Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are stable . There is no pleural effusion or pneumothorax . There is no focal consolidation concerning for pneumonia or contusion . Multiple left posterior and lateral rib fractures are better seen on the concurrent rib plain films . A left pacemaker defibrillator is seen with tips terminating in the right atrium and right ventricle .
    OUTPUT:
    
Multiple left posterior and lateral rib fractures , better seen on the concurrent rib films . No pneumothorax or other acute abnormality .