Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate interval decrease in a previously moderate left pleural effusion , now small in size . There is , however , interval development of a small right pleural effusion with atelectasis . Upper lungs are well aerated . There is no pneumothorax or consolidation . Cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
Smaller left pleural effusion and new small right effusion since six days prior .