症例報告：肥厚性心筋症と左室高形成の出会い：混合型心筋症から高形成を伴う肥厚性心筋症へ

This case report describes a young male patient admitted due to worsening of heart failure with recurrent embolic events. He had previously been diagnosed with hypertrophic cardiomyopathy (HCM) and left ventricular systolic dysfunction at other hospitals and was treated irregularly with medications including a beta-blocker and diuretics. On this admission, echocardiography and cardiac MR examination revealed left ventricular myocardial non-compaction combined with HCM. The coexistence of left ventricular hypertrophy and hypertrabeculation is rare, and the diagnosis has been updated according to the newly issued European Society of Cardiology guidelines. The present report describes the clinical features, therapy, and outcome of this disease.