Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is within normal limits . The mediastinal contours are normal . The lung volumes are low , which show no consolidation . There is no large pleural effusion or pneumothorax . Clips in the neck from prior thyroid surgery are unchanged .
    OUTPUT:
    
Low lung volumes with no evidence of pulmonary or pleural abnormality .