Small verrucous vegetations seen along the closure line of this mitral valve. These warty vegetations average only a few millimeters and form along the line of valve closure over areas of endocardial inflammation. The lower photo. display Acute rheumatic mitral valvulitis superimposed on chronic rheumatic heart disease. Small vegetations (verrucae) are visible along the line of closure of the mitral valve leaflet (arrows). Previous episodes of rheumatic valvulitis have caused fibrous thickening and fusion of the chordae tendineae.
