[Secondary hemomediastinum after positioning a hemodialysis catheter]

We describe a case of late perforation of the superior vena cava by a hemodialysis catheter inserted via the left internal jugular vein. This resulted in extravasation of blood. Malposition of the catheter was confirmed by CT scan. Removal of the catheter resulted in rapid resolution of symptoms. Confirmation of correct placement of central venous catheter must be obtained by chest X-ray contrast study.