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. 2022 Feb 21;9:790917. doi: 10.3389/fcvm.2022.790917

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Copyright © 2022 Xie, Liu, Wei, Ye, Ma, Lu, Tan, Li, Wang, Zhao, Lu, Li, Chen and Liu.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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A 16-year-old male presented with chest tightness and shortness of breath and was genetically diagnosed with Danon disease (mutation site: c.936G > A). (A) f-QRS with a notched R pattern (red arrows) were found in the lateral leads (I, aVL, V6); the total f-QRS score was 3. (B) Four-chamber view and (C) short-axis view of LGE images on CMR showed patchy fibrosis/scarring in the lateral wall of LV (orange arrows). Global LV LGE% was 20%. f-QRS, fragmented QRS; LGE, late gadolinium enhancement.