Brachiocephalic VeinsAzygos VeinBrachiocephalic TrunkVena Cava, SuperiorSuperior Vena Cava SyndromePhlebographyJugular VeinsCatheterization, Central VenousConstriction, PathologicVeinsVena Cava, InferiorTomography, X-Ray ComputedArteriovenous Shunt, SurgicalHeterotaxy SyndromeSubclavian ArterySubclavian Vein