慢性风湿性心瓣膜病可能由急性心内膜炎机化和纤维化发展而来，可见二尖瓣受到影响。注意腱索缩短和变厚了。
In time, chronic rheumatic valvulitis may develop by organization of the acute endocardial inflammation along with fibrosis, as shown here affecting the mitral valve. Note the shortened and thickened chordae tendineae.