Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: New right pleural drain has been placed , with interval decrease of right pleural effusion , now small and with minimal residual intrafissural component . Increased opacification of the right base might be related to lung parenchyma reexpansion edema and atelectasis . Left lung is clear . Cardiomediastinal silhouette is top normal . There is no pneumothorax .
    OUTPUT:
    
New right base pleural drain has been placed with improvement of right base pleural effusion . Right base opacification is due to mild edema and atelectasis .