Huge interventricular septal aneurysm diagnosed in vivo in an adult.

789 with a reduced left ventricular ejection fraction (40%), moderate mitral valve insufficiency, and moderate ‐to ‐severe tricuspid valve insufficiency. In the parasternal long ‐axis view (FIGURE 1C and 1D) and the apical 5 ‐chamber view (FIGURE 1E–1G), an accessory structure was found in the region of the left ventricular outflow tract. Localization A 40 ‐year ‐old patient with no known medical history presented with progressive exertional dyspnea. A 12 ‐lead electrocardiogram showed a first ‐degree atrioventricular block and signs of left ventricular hypertrophy. Transthoracic echocardiography revealed dilation and global hypokinesis of the left ventricle (FIGURE 1A and 1B) CLINICAL IMAGE