Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right - sided PICC line terminates in the distal SVC . There is persistent left retrocardiac opacity likely reflecting atelectasis . Right basilar atelectasis also noted . Superimposed infection can not be excluded . No definite pleural effusion seen although the left costophrenic angle is not well visualized . No pneumothorax seen .
    OUTPUT:
    
No significant interval change when compared to the prior study .