Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again , a left - sided Port - A - Cath terminates just below the cavoatrial junction . The heart is mildly enlarged . The cardiomediastinal and hilar contours are within normal limits . Bibasilar opacities , left greater than right likely represent atelectasis . There is no evidence of pulmonary edema . No pleural effusion or pneumothorax are identified .
    OUTPUT:
    
Bibasilar opacities , left greater than right likely reflect atelectasis .