Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right internal jugular approach Port - A - Cath tip terminates in the right atrium . Heart size is normal with unfolding of the thoracic aorta . Hilar contours are unremarkable . Lung volumes are low . There are persistent right greater than left lung base opacities , appearing slightly improved compared to prior examination . Opacity projecting over the right chest wall port could be external in nature , no correlate opacity confirmed on the lateral . There is no large pleural effusion or pneumothorax .
    OUTPUT:
    
Persistent right greater than left lung base opacities in the setting of low lung volumes , minimally improved compared to the prior examination likely representing atelectasis . Focal opacity projecting over the right chest wall port , potentially due to external object / dressing over port during access , to be correlated clinically .