Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since ___ : 30 previous right middle and lower lobe collapse have improved revealing a small right pleural effusion which is probably unchanged . If there is any pneumothorax it is very small . Left lung is essentially clear aside from minimal relative pulmonary vascular engorgement . Cardiomediastinal silhouette is normal
    OUTPUT:
    
Improved right basal atelectasis . Small right pleural effusion is probably incidental . Minimal , new , pulmonary vascular engorgement .