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Figure 4: Ductal stent redilatation in an infant with pulmonary atresia with ventricular septal defect and cyanosis (Case 11) of the ductus arteriosus. (a) In-stent stenosis: layer of neointimal proliferation (black arrow); (b) stenosis of unstented segment of a long vertical ductus arising from the left subclavian artery; (c) Postexpansion angiogram

Figure 4: Ductal stent redilatation in an infant with pulmonary atresia with ventricular septal defect and cyanosis (Case 11) of the ductus arteriosus. (a) In-stent stenosis: layer of neointimal proliferation (black arrow); (b) stenosis of unstented segment of a long vertical ductus arising from the left subclavian artery; (c) Postexpansion angiogram