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. 2020 Feb 17;4(2):1–6. doi: 10.1093/ehjcr/ytaa011

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© The Author(s) 2020. Published by Oxford University Press on behalf of the European Society of Cardiology.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com

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Computed tomography, computed tomography angiography, and positron emission tomography–computed tomography findings of Case 2. (A) No significant stenosis was observed in left anterior descending artery. (B) Significant stenosis was observed in left circumflex coronary artery. (C) Significant stenosis with aneurysm was observed in mid-right coronary artery. (D) Significant stenosis with calcification was observed in left main trunk. (E) Concentric wall thickening of the ascending aorta was observed. (F) Plain computed tomography showed concentric thickened high-attenuation wall of ascending aorta. (G) Contrast-enhanced computed tomography showed that the thickened wall appeared with low-attenuation. (H) Delayed phase contrast-enhanced computed tomography showed ‘double ring enhancement’ (black arrowheads). (I) Positron emission tomography–computed tomography revealed increased F-18 fluorodeoxyglucose uptake in the wall of ascending aorta, especially a part of ‘double ring enhancement’ (red arrowheads). CAG, coronary angiography; CT, computed tomography; CTA, computed tomography angiography; IVUS, intravascular ultrasound; LAD, left anterior descending artery; LCX, left circumflex coronary artery; LMT, left main trunk; OCT, optical coherence tomography; PET, positron emission tomography; PLEA, peri-arterial low-echoic area; RCA, right coronary artery.