Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . Lungs are clear and well inflated . A linear density in the left lower lung is likely atelectasis . No pleural effusion or pneumothorax is seen . Cardiomediastinal silhouette is normal . No displaced rib fractures are seen . Bony structures appear intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
No acute findings including no sign of rib fracture .