Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval decrease in amount of left pleural effusion . There is residual left basal atelectasis , though improved compared to prior . There is no significant change in the right lung or the cardiomediastinal silhouette . There is no pneumothorax .
    OUTPUT:
    
Interval decrease in left pleural effusion and atelectasis . No pneumothorax .