Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are obtained . There is interval improvement in the right pleural effusion with some underlying atelectasis at the right lung base . The previously seen left pleural effusion is unchanged . The cardiomediastinal silhouette is unremarkable . There is no evidence of pulmonary edema or pneumothorax .
    OUTPUT:
    
Improving right pleural effusion with underlying atelectasis . Left pleural effusion is unchanged .