Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Heart size is normal . Mediastinal and hilar contours are unremarkable . There is no pulmonary edema . Linear opacities in the lung bases are compatible with subsegmental atelectasis . No focal consolidation , pleural effusion or pneumothorax is identified .
    OUTPUT:
    
Low lung volumes with bibasilar subsegmental atelectasis .