Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to prior chest radiograph from ___ , there has been no significant change . There is unchanged airlessness of the left lower lung with elevation of left hemidiaphragm . Atelectasis of the right lung base has worsened since ___ but remains unchanged since yesterday . There is a stable small right pleural effusion . There is no pneumonia or pneumothorax . Cardiomediastinal silhouette is unchanged . There is subcutaneous emphysema in the upper neck on the right . Displacement of the osteotomy of the right posterior fourth rib is unchanged .
    OUTPUT:
    
Unchanged chest examination with small right pleural effusion and atelectasis .