Fig. 3From: Leiomyosarcoma arising in irradiated region after breast-conserving surgery: a case reportPathological findings (magnification ×200). The tumor was a 30 × 23 mm tumor with atypical spindle cells arranged in a fascicular histoid pattern. Immunohistochemistry demonstrated that the tumor cells were positive for α-smooth muscle actin (α-SMA), desmin, and vimentin. a Hematoxylin-eosin staining. b α-SMA. c Desmin. d VimentinBack to article page