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Fig. 3A. Pattern c: Anomalous brachiocephalic vein in
1-year-5-month-old boy with tetralogy of Fallot and right aortic arch. Ao =
aorta, S = superior vena cava. Sequential CT images reveal anomalous
brachiocephalic vein (pound sign) located behind pulmonary stump of
patent ductus arteriosus (asterisk) as it crosses midline, passing
below aortic arch with drainage into superior vena cava at level slightly
lower than entry of azygos arch (arrows). T = trachea, L = left
pulmonary artery, R = right pulmonary artery.