Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right lower lung opacity continues to improve . No new consolidation is identified . A left chest tube is in unchanged position . A probable small left pleural effusion is not significantly changed . There is no pneumothorax . The cardiomediastinal silhouette is stable . A prominent air bubble in the left upper quadrant represents overlapping stomach and descending colon .
    OUTPUT:
    
1 . Unchanged position of the left chest tube . No pneumothorax . 2 . Continued improvement of the right lower lung pneumonia .