Multiple Papilliform Proliferation of the Endocardium of the Chordae Tendineae Cordis in Cattle

Abstract

Small papilliform lesions of the chordae tendineae cordis were detected in 176 out of 200 adults and 4 of 50 calves of Holstein-Friesian as well as 29 out of 100 adults of Japanese Black. Most of the lesions were produced on the mitral valves and characterized by proliferation of the endothelium with some fibrosis in the lamina propria.