Heart, Valve - Degeneration, Myxomatous - Gallery

Heart, Valve - Degeneration, Myxomatous in a female F344/N rat from a chronic study. With myxomatous degeneration, the valve leaflets are often thickened (arrows).

Heart, Valve - Degeneration, Myxomatous in a female F344/N rat from a chronic study (higher magnification of Figure 1). The valve leaflet is thickened and rounded.

Heart, Valve - Degeneration, Myxomatous in a female F344/N rat from a chronic study (higher magnification of Figure 1). Abundant fibromyxoid tissue is present within the subendocardium, giving the valve a pale, basophilic, mucoid appearance.