Anterior Papillary Muscle Rupture due to Acute Myocardial Microinfarction of the Small High Lateral Branch

Figure 3

Resected specimen reveals complete rupture of the anterior papillary muscle (a, b). The pathological findings of the resected anterior papillary muscle reveal ischemic changes and necrosis of the myocytes (c–e). The black quadrangle indicates the area of (d), and the white quadrangle indicates the area of (e). MV: mitral valve; PM: papillary muscle.

(a)

(b)

(c)

(d)

(e)