Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are unchanged compared to the prior study . There is a tiny residual left pleural effusion . A left - sided PICC terminates in the mid SVC . A right - sided PICC terminates in the mid SVC . No consolidation or pneumothorax seen . No free air under the diaphragm .
    OUTPUT:
    
No significant interval change when compared to the prior study .