Abstract
Ventricular noncompaction is a rare type of cardiomyopathy often associated with a ventricular aneurysm. We present a clinical case of a 6-year-old female who arrived at our clinic complaining of physical exertion. Echocardiography revealed prominent trabeculations in the left ventricular wall and a lateral-basal part bulging out, indicating noncompaction of the left ventricular myocardium with an aneurysm. With a noncompacted-to-compacted myocardium ratio of 2.6, magnetic resonance imaging revealed the presence of noncompacted myocardium. It also revealed impaired left ventricular systolic function and a left ventricular aneurysm with myocardial scarring. Coronary angiography ruled out coronary artery disease. Therefore, myocardial scarring was caused by noncompacted myocardium microcirculatory disorder.