<unk>  refers to mitral regurgitation that occurs when the left ventricle dilates causing dilation of the mitral annulus and incompetence or leaking of the mitral valve.  The mitral valve is itself normal.
Functional mitral regurgitation
Ischemic mitral regurgitation
Mitral regurgitation
Calcific aortic valve disease
Mitral valve sclerosis
Aortic regurgitation
Mitral stenosis
Tricuspid regurgitation