22-year-old HCM patient with extreme LVH. Parasternal long-axis (panel A), parasternal short-axis (panel B), and apical four-chamber (panel C) end-diastolic still-frame images demonstrate asymmetrical hypertrophy with a maximal LV wall thickness of 37 mm (green lines). The interventricular septum (IVS) shows a typical reversed curvature septal morphology (panels A and B). Ao: aorta; RA: right atrial chamber