Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are obtained . Lungs are clear , though there is minimal bibasilar plate - like atelectasis . No effusion , or pneumothorax . Heart and mediastinal contours appear normal . No definite rib fracture is seen .
    OUTPUT:
    
No evidence of intrathoracic injury . No definite displaced rib fracture .