Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A tunneled large bore right internal jugular central venous catheter ends in the mid right atrium , not significantly changed . The degree of dense retrocardiac opacification is not significantly changed . A layering moderate left pleural effusion is not significantly changed . The right lung is clear aside from minimal basilar atelectasis . Aortic calcifications are re-demonstrated . Moderate cardiomegaly is likely unchanged allowing for difference in patient position . There is no pneumothorax .
    OUTPUT:
    
Slight increase in moderate left pleural effusion and degree of left retrocardiac opacification that likely reflects atelectasis .