64-year-old female patient
Class II NYHA dyspnea
Electrocardiogram: Sokolow index = 42
chest x-ray: without abnormality
Coronarography: no coronary stenosis
Illustration : Fig1,2 ; movie 1 (attached)
A transthoracic ultrasound showed LV asymmetric hypertrophy, the septum was measuring 21 mm, an average LV-Ao gradient at 100 mm Hg, an accessory pillar emerging from the septum blocking left ventricular outflow and whose chordae are inserted on the large mitral valve, no aortic insufficiency or pulmonary arterial hypertension.