Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is interval placement of a pleural catheter in the right lower chest . Subcutaneous air in the right lateral chest wall is in keeping with the recent procedure . Previous moderate right pleural effusion has substantially decreased in size ; however right pneumothorax appears slightly larger . Right basilar opacities are most consistent with residua atelectasis . The left lung is clear . Cardiomediastinal silhouette is stable .
    OUTPUT:
    
Interval placement of a right - sided pleural drain with substantial decrease in right pleural effusion . Large right hydropneumothorax is primarily gas - filled and has slightly increased in size .