**2. History**

This anomaly was first described by Wilhelm Ebstein, a German physician, in a report titled "Concerning a very rare case of insufficiency of the tricuspid valve caused by a congenital malformation" [1, 2]. Ebstein's own description of the malformation in 1866, with illustrations by Dr. Weiss, was based upon the anatomical findings related to the heart of Joseph Prescher, a 19-year-old cyanotic laborer with dyspnea, palpitations, jugular venous distension, and cardiomegaly [1, 2]. Ebstein described an enlarged and fenestrated anterior leaflet of the tricuspid valve in the findings of the autopsy. The posterior and septal leaflets were hypoplastic, thickened, and adherent to the right ventricle. There was also a thinned and dilated atrialized portion of the right ventricle, an enlarged right atrium, and a patent foramen ovale [3, 4]. The first case described in the English literature was not published until 1900 years [5–7]. In the 1950s, successful surgical palliation was achieved.
