Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are unchanged and within normal limits . Pulmonary vascularity is normal . Except for minimal bibasilar atelectasis , lungs are clear without focal consolidation . No pleural effusion or pneumothorax is present . There are no acute osseous abnormalities . Old right mid clavicular fracture is again noted .
    OUTPUT:
    
Minimal bibasilar atelectasis . No radiographic evidence for pneumonia .