Intraoperative pulmonary embolization by the tip of a Polystan venous return catheter.

In a 10-year-old girl being treated for ventricular septal defect, the tip of a Polystan venous return catheter broke away when the catheter was being removed at the time of bypass disconnection. Following fluoroscopic identification of the tip in the left peripheral pulmonary artery, it was removed via arteriotomy.