Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Heart size is top normal . Mediastinal and hilar contours are unremarkable . Pulmonary vascularity is not engorged . Mild bibasilar streaky opacities likely reflect atelectasis in the setting of low lung volumes . No pleural effusion or pneumothorax is seen . No acute osseous abnormalities are visualized .
    OUTPUT:
    
Low lung volumes with probable mild bibasilar atelectasis .