Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right chest tube is in unchanged position . The large right pleural effusion is unchanged . Previously seen pleural air along the tract of the chest has decreased . The left lung is clear . No pneumothorax . The visualized cardiomediastinal silhouette is unchanged . The subcutaneous emphysema has improved slightly .
    OUTPUT:
    
1 . The large right pleural effusion is unchanged . 2 . The chest tube is in unchanged position . 3 . The subcutaneous emphysema has improved .