Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Right upper lobe opacities may reflect atelectasis or scarring . There is no focal consolidation , pleural effusions or pneumothorax . The cardiomediastinal silhouette is unchanged . The imaged upper abdomen is unremarkable .
    OUTPUT:
    
Low lung volumes with scarring or atelectasis in the right upper lobe . No change since the prior study .