Case Report: Native mitral valve causing left ventricular outflow tract obstruction in an adult with Ebstein’s anomaly

Ebstein’s anomaly is a rare congenital heart disease of the tricuspid valve which is characterized by the adherence of septal and posterior leaflets to the underlying myocardium, apical displacement of the functional annulus, dilatation of the atrialized portion of the right ventricle, redundancy, fenestrations, and tethering of the anterior leaflet, dilatation of the true tricuspid annulus (1, 2). Mitral valve anomalies are more common than expected in this congenital disease compared with the general population (3). Accessory mitral valve causing left ventricular outflow tract (LVOT) obstruction has also been reported in a patient with Ebstein’s anomaly (4). We present a case of Ebstein’s anomaly with LVOT obstruction due to native mitral valve which we think is first in the literature.