Fig. 5

Cardiac magnetic resonance (CMR). CMR showed that the left ventricle was diffusely and extremely hypertrophied. The thickness of the interventricular septum was 40 mm. In the end diastole, the left ventricular mass was 274.71 g, and the right ventricular mass was 59.38 g. The left ventricular cavity was relatively small (diastolic diameter 39 mm) without an enlarged left atrium (anterior–posterior diameter 26 mm). The measured LVEF was 56%, and the cardiac output was 6.6 L/min. CMR showed diffusely patchy late gadolinium enhancement (LGE) in the septum, and middle and distal segments of the left ventricle. The percentage of left ventricular fibrosis was 51.6%