Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright chest radiograph ___ at 10 :30 is submitted .
    OUTPUT:
    
Right internal jugular Port - A - Cath is unchanged in position . The heart remains enlarged . Mediastinal contours are stable . There has been interval appearance of mild perihilar and interstitial edema . Linear opacity at the right base likely reflects atelectasis . No pleural effusions . No pneumothorax .