Fig. 1

Abnormal thinning of the basal ventricular septum. A parasternal long-axis transthoracic echocardiography view at the level of the aortic valve showing abnormal ventricular septal thinning with a minimal thickness of 4.4 mm (arrow). LA left atrium, LV left ventricle, RA right atrium, RV right ventricle, Ao aorta