Frank Szmulowicz, Ph. D. May 12, 2021:

Figure 1. A, B – initial coronary angiogram: no significant narrowing and lack of the circumflex branch are noticeable. C – angio-CT showing abnormal origin of the circumflex branch from the right Valsalva sinus with possible narrowing in the proximal segment; D – critical lesion in the proximal segment of ectopic circumflex branch originating from the right Valsalva sinus (a); E – final coronary angiogram with the circumflex branch successfully treated by drug eluting stent implantation
Abbreviations: Cx, circumflex coronary artery; Dg, diagonal artery; LAD, left anterior descending artery; RC, right coronary artery
https://www.mp.pl/paim/issue/article/4491/