Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild improvement in moderate right pleural effusion . Right basilar opacification likely atelectasis is stable . Left basilar atelectasis is unchanged . No significant change in the anterior right pneumothorax since ___ . The cardiac and mediastinal silhouettes are unchanged .
    OUTPUT:
    
Mild improvement in moderate right pleural effusion . Otherwise no significant interval change since ___ .