Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . The heart size is normal . Mediastinal and hilar contours are normal . No focal consolidation , pleural effusion or pneumothorax is present . Mild bibasilar atelectasis is noted . No acute osseous abnormalities visualized .
    OUTPUT:
    
Mild bibasilar atelectasis in the setting of low lung volumes .