Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are within normal limits . There is mild bibasilar atelectasis . There is no focal consolidation , pleural effusion or pneumothorax . Surgical hardware projects over the lower cervical / upper thoracic spine . Rib deformities on the left are again seen , similar to prior chest CT .
    OUTPUT:
    
Mild bibasilar atelectasis . No consolidation .