Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again , there is a large right hydropneumothorax . Overall , the size appears slightly decreased from prior exam with an associated mild increase in expansion of the right lung . The right - sided chest tube is unchanged . The left lung is clear . The cardiomediastinal silhouette is normal .
    OUTPUT:
    
Slight interval decrease in size of the large right hydropneumothorax .