Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A tunneled right - sided dialysis catheter is stable . Aortic stent graft is unchanged in position and appearance . A moderate , loculated right and small left pleural effusion are stable to minimally decreased in size from the prior examination on ___ . Pulmonary opacity at the base of the right lung is demonstrated . There is minimal pulmonary opacity at the base of the left lung which suggests atelectasis . No pneumothorax .
    OUTPUT:
    
Moderate loculated right effusion is not significantly changed from the prior examination . Opacity at the base of the right lung may represent atelectasis or infection . Small left pleural effusion is stable .