Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low . Otherwise , there is no change from 3 days prior . No pleural effusion , pneumothorax or focal airspace consolidation worrisome for pneumonia . Heart is normal size . Mediastinal and hilar structures are unremarkable . No displaced rib fracture .
    OUTPUT:
    
Low lung volumes , otherwise , no change from 3 days prior .