Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Heart size is within normal limits . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal . Minimal patchy opacities are seen in the lung bases , likely reflective of atelectasis without focal consolidation . No pleural effusion or pneumothorax is demonstrated . No acute osseous abnormalities seen .
    OUTPUT:
    
Low lung volumes with probable bibasilar atelectasis .