[Mitral valve insufficiency caused by endomyocardial fibrosis of the left ventricle. A case report].

A 38-year old female patient, who had asymptomatic heart disease for seven years, developed progressive and fatal heart failure in eight months. The diagnosis of mitral valve insufficiency was made five months before death. The necropsy revealed that the etiology of mitral insufficiency was isolated left ventricle endomyocardial fibrosis with unusual involvement of the posterior cusp of the mitral valve.