Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Increasing small left - sided pleural effusion with recent atelectasis . Clips are seen in the left upper lobe with decreasing surrounding opacity . Mild elevation and asymmetry of the left hilum can be post treatment changes . No pulmonary edema . The right lung is clear . The cardiac silhouette is not enlarged . PriorTAVR with aortic stent .
    OUTPUT:
    
Increasing small left - sided pleural effusion .