Wang W.-Y.YEUN-CHUNG CHANGCHIEN-HUA HUANGLi Y.-W.2020-12-162020-12-1620021018-8940https://scholars.lib.ntu.edu.tw/handle/123456789/526625Lipomatous hypertrophy of interatrial septum (LHIS), usually found in echocardiography, is a rare non-neoplastic disease entity, which may cause arrhythmia or sudden death. We reported a case of LHIS associated with hypertrophic cardiomyopathy (HCM), which was suspected a hyperechoic intraatrial tumor in transthoracic echocardiography. Magnetic resonance (MR) imaging showed fat infiltration of the interatrial septum, indicating lipomatous hypertrophy in addition to hypertrophic myocardium. Combined HCM and LHIS were assumed incidental but had not been reported to our knowledge. Characteristic MR imaging of LHIS is an important supplement to echocardiography with ambiguous findings.[SDGs]SDG3antihypertensive agent; adult; article; case report; clinical feature; diagnostic imaging; disease association; female; follow up; heart atrium septum; heart catheterization; human; hypertension; hypertrophic cardiomyopathy; lipoma; lipomatous hypertrophy of interatrial septum; nuclear magnetic resonance imaging; thorax pain; transthoracic echocardiographyjournal article2-s2.0-0036807416