Figure 3: Percutaneous pulmonary valve implantation in a 17-year-old adolescent after surgical implantation of a 22-mm bioprosthetic valved HancockŪ conduit (Medtronic) in a patient previously operated on for tetralogy of Fallot and pulmonary atresia: degenerative changes of the conduit ten years after his last open-heart surgery led to significant pulmonary regurgitation and stenosis, resulting in the indication for pulmonary valve implantation.