Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP chest radiograph is obtained with the patient in the upright position . Esophageal stent and Port - A - Cath are unchanged . A pigtail catheter again noted projecting over the left base . Cardiomediastinal contour is unchanged . Right pleural effusion is perhaps slightly worse , left pleural effusion is stable . Mild bilateral atelectasis . No pneumothorax .
    OUTPUT:
    
No significant changes compared to the prior study .