Fig. 2

Histopathology and immunohistopathology of cardiac benign metastatic leiomyoma. Much of the tumor was hyalinized, but scattered areas showed fascicles of cytologically bland spindle cells with interspersed thick-walled blood vessels (A, 40X magnification; B, 200X magnification). The tumor cells were diffusely positive for muscle markers including desmin (C, 40X magnification) and estrogen receptor (D, 40X magnification, inset 200X magnification). These features were consistent with a leiomyoma