Anomalies of the coronary ostia are a potential challenge to the interventionalist. Commissural alignment has recently been introduced as concept for transcatheter aortic valve replacement (TAVR) to avoid potential coronary obstruction and to facilitate future coronary re-access. Here, we report a case of TAVR in a patient with a rare anomaly of the left coronary artery (LCA)-ostium, originating from the commissure between left- and noncoronary sinus, illustrating a potential pitfall for contemporary TAVR-implantation protocols and discuss the final choice of prosthesis suiting the demands of this distinct anatomical variance.
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