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Figure 1: (a) Aortogram after the release of the Cocoon duct occluder showing good position of device with moderate diffuse residual shunt through the device (arrow); PA: pulmonary artery, AO: aorta. (b) Endothelialization seen as a 1-2 mm thick white line (arrows) along the body of the device indicating that the device is secure

Figure 1: (a) Aortogram after the release of the Cocoon duct occluder showing good position of device with moderate diffuse residual shunt through the device (arrow); PA: pulmonary artery, AO: aorta. (b) Endothelialization seen as a 1-2 mm thick white line (arrows) along the body of the device indicating that the device is secure