Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is top normal . The mediastinal and hilar contours are unchanged . There is no pulmonary edema . Minimal streaky bibasilar opacities likely reflect atelectasis . No focal consolidation , pleural effusion or pneumothorax is seen . Minimal degenerative spurring is noted within the thoracic spine .
    OUTPUT:
    
Probable mild bibasilar atelectasis . No focal consolidation to suggest pneumonia .