[Primary endocardial fibroelastosis].

Endocardial fibroelastosis is a disease characterized by a prominent proliferation of dense collagenous and elastic tissue in the endocardium with the occurrence of congestive heart failure and death in early life. There are, however, many recorded instances of infants surviving the initial illness and living up to or beyond puberty. The clinicopathological factors for good prognosis include the increase in myocardial mass of ventricle evaluated by ventriculography and the histopathologic evidence for compensatory myocardial cell hypertrophy in the biopsied myocardium.