Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Mild bibasilar atelectasis is similar to the prior study . There is no focal consolidation , pleural effusion , or pneumothorax . Heart size is normal . Mediastinal silhouette and hilar contours are normal . Again seen are multiple left - sided rib fractures .
    OUTPUT:
    
No acute intrathoracic process .