Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left PICC is unchanged in position with the tip terminating in the proximal SVC . There is no significant interval change in the extent of pulmonary vascular congestion / interstitial edema from ___ . Opacification at the left lung base is unchanged , likely reflecting a small - to - moderate left pleural effusion and underlying atelectasis . There is improved aeration of the right lung base . There is no pneumothorax . The cardiac silhouette remains enlarged , but stable . The mediastinal contours are prominent , but unchanged . There is partial calcification of the aortic knob .
    OUTPUT:
    
Little change in pulmonary vascular congestions / interstitial edema from ___ with improved aeration at the right lung base .