A 12-day-old girl underwent extended end-to-end aortic arch reconstruction with proximal pulmonary autograft patch augmentation on moderately hypothermic cardiopulmonary bypass. At the end of the procedure, the right superior pulmonary vein developed a severe stenosis at the insertion site of the left atrial vent, as a consequence of multiple hemostatic sutures. We report the successful intraoperative ad hoc application of the sutureless pericardial marsupialization technique for the herewith described severe, isolated, iatrogenic pulmonary vein stenosis in a neonate.
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