Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right internal jugular central venous catheter tip terminates in the region of the low SVC . No pneumothorax is identified . There has been interval improvement in aeration of the lung bases with residual patchy bibasilar opacities , likely atelectasis . No large left pleural effusion is present . The right costophrenic angle is excluded from the field of view . Cardiac and mediastinal contours are unchanged .
    OUTPUT:
    
Right internal jugular central venous catheter tip terminates in the region of the low SVC . No pneumothorax .