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Embolization of pacemaker electrode fragments into the pulmonary circulation is a rare complication following transvenous pacemaker implantation. One such case is reported here. In a 67-year-old patient, a battery pocket infection developed after transvenous pacemaker implantation and subsequent surgical revision. After removal of the pacemaker and ventricular pacing lead, the atrial lead broke within the superior vena cava when prolonged traction was applied after frustrating attempts to extract the electrode. Attempts to extract the fragment transvenously using endoscopic forceps were unsuccessful. Due to firm fixation of the electrode by extensive fibrous scar tissue in the atrial wall, a further attempt to remove the retained electrode fragment by atriotomy also failed. On the first postoperative day, the fragment migrated to the left pulmonary artery, from where it was successfully extracted by means of a Dormier basket.