Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to prior , there is interval decrease in size of a now small left pleural effusion tracking along the lateral pleura . There is no pneumothorax . The cardiomediastinal silhouette is normal . There is left basilar atelectasis , but no focal consolidation .
    OUTPUT:
    
Interval decrease in size of a now small left pleural effusion , no pneumothorax .