Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a moderate to large pleural effusion on the left which is similar in size allowing for differences in technique . There is probably associated atelectasis of the lingula and left lower lobe . On the right , there is a small pleural effusion with curvilinear peripheral opacification which suggests round atelectasis . The degree of effusion on the right side has decreased . Otherwise , there has been no definite change .
    OUTPUT:
    
1 . Persistent left - sided pleural effusion . 2 . Decrease in small right - sided pleural effusion with round atelectasis .