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Coronary angiogram performed in 2021. A, Progression of native coronary artery disease, with tight stenosis in the distal left main (white arrow) and severe stenosis in the proximal left anterior descending artery (black arrow). B-D, Images from the same sequence showing complete reversibility of the string sign of the left internal mammary artery graft. Arrowhead indicates the left internal mammary artery anastomosis on the left anterior descending artery.
