Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is normal . The mediastinal and hilar contours are unremarkable . The pulmonary vascularity is normal . No focal consolidation , pleural effusion or pneumothorax is seen . There are minimal streaky opacities in the lung bases which are most likely reflective of atelectasis . No acute osseous abnormality is present .
    OUTPUT:
    
Mild bibasilar atelectasis .