Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are normal . There is no focal consolidation , effusion , or pneumothorax . Linear right upper lung opacity is likely due to scarring . There is no central vascular congestion or overt pulmonary edema . Mediastinal and hilar contours are normal . Heart is mildly enlarged . Multiple left posterior and right anterior rib fractures are seen .
    OUTPUT:
    
No evidence of pneumonia . Multiple chronic left posterior and right anterior rib fractures .