Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A portable frontal chest radiograph demonstrates a normal cardiomediastinal silhouette and low lung volumes . There is re-expansion of the right lung , with persistent lower lung atelectasis . Marked subcutaneous emphysema along the right chest wall is noted . There is no appreciable pneumothorax . The visualized upper abdomen is unremarkable .
    OUTPUT:
    
Interval re-expansion of the right lung , with persistent lower lobe atelectasis . Marked right chest wall subcutaneous emphysema , as before .