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Close proximity of cardiovascular structures to the sternum. a Axial CT scan in a 72-year-old man for re-operative cardiothoracic surgery shows close proximity of the left brachiocephalic vein (arrow) to the midline sternum, lying directly under the sternal midline. b Axial CT scan at a lower level in the same patient shows the right ventricle and pericardium, lying adherent to the midline sternum (arrow)
