Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The mediastinal and hilar contours are within normal limits . There are streaky opacities in the lung bases . No focal consolidation , pleural effusion or pneumothorax is present . There are no acute osseous abnormalities noted .
    OUTPUT:
    
Streaky opacities in the lung bases which may reflect atelectasis .