Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left pectoral pacemaker in its 2 leads are in unchanged positions . Right internal jugular venous catheter terminates at the level of low SVC . There is no pneumothorax or large pleural effusion . Lung volume is low . Mild bibasilar opacities are likely atelectasis . Cardiomegaly is similar to before .
    OUTPUT:
    
Right internal jugular venous catheter terminates at the level of low SVC .