Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a right internal jugular central venous catheter with tip in the proximal right atrium and could be withdrawn 2 cm for positioning in the SVC . Low lung volumes are again noted . Bibasilar opacities may be due to atelectasis . There is no pneumothorax . The cardiomediastinal silhouette is stable . Degenerative changes noted at the right shoulder .
    OUTPUT:
    
Right IJ central venous catheter with tip likely in the right atrium and could be withdrawn 2cm to be within the SVC .