Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to prior , there has been substantial increase in size of a now moderate right pneumothorax . Chest tube is grossly unchanged in position . There is also increase in subcutaneous emphysema along the lower right lateral chest wall . Cardiomediastinal silhouette is unchanged . There is persistent right opacity with slight improvement in aeration compared to prior .
    OUTPUT:
    
1 . Substantial increase in size of a now moderate right pneumothorax . 2 . Increased subcutaneous air along the right lateral chest wall raises the concern for an air leak .