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An 80-year-old man with a history of coronary artery bypass graft surgery 23 years ago was admitted with an anterior non-ST elevation myocardial infarction. Cardiac catheterisation showed proximal occlusion of the native coronary arteries. There was a critical proximal stenosis in the single remaining vein graft, which supplied a large diagonal branch (figure 1, panel …
Competing interests None.
Provenance and peer review Not commissioned; not externally peer reviewed.