Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes are present . Streaky linear opacities in both lung bases most likely reflect atelectasis . The heart size is normal , and the mediastinal and hilar contours are unremarkable . No pleural effusion or pneumothorax is identified . No acute osseous abnormalities detected .
    OUTPUT:
    
Bibasilar atelectasis with low lung volumes .