[Case study of congenital heart defects]

A rare case is presented: at the autopsy in a 54-year-old female patient a congenital heart defect was found in the form of the valve remnants of the embryonal venous sinus (Chiari network and enlarged Eustachian valve). The right atrium thrombosis in the region of Chiari network resulted in the thromboembolism of the left pulmonary artery this being an immediate cause of death.