Nonatheromatous Coronary Kink Causing Angiographic Obstruction: A Rare Structural Anomaly

Figure 1

(a and b) Coronary CT angiography demonstrating proximal left circumflex artery blockage. (c) Coronary angiography showing 70% stenosis of the left circumflex artery. (d and e) Discrepant iFR and FFR results. (f) Intravascular ultrasound showing normal reference segment distal to the proximal lesion. (g) Eccentric narrow orifice without atherosclerotic plaque with a minimal lumen area of 6.7 mm². (h) Color-flow image of eccentric narrow orifice without evidence of atherosclerotic plaque.

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