Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right - sided Port - A - Cath terminates at the cavoatrial junction and is in appropriate position . Cardiomediastinal silhouette and hilar contours are within normal limits . Left lower lobe atelectasis and small to moderate left pleural effusion are unchanged . The right lung is clear . No pneumothorax .
    OUTPUT:
    
Left basal atelectasis small left pleural effusion are not significantly changed .