Figure 2

Histologic features of anastomosing hemangioma. (A) At low power, the tumor was well demarcated but had no capsula (HE; magnification × 40). (B) At higher magnification, the tumor was composed of anastomosing sinusoidal capillary-sized vessels. Scattered intravascular thrombi associated with extravasated, intact RBCs and hemosiderin were seen (HE; magnification × 100). (C) At higher power the tumor cells appeared oval to spindle in shape with minimal pleomorphism (HE; magnification × 200). (D) Under high magnification, the tumor cells lacked cellular atypia, multilayering of endothelial cells and apoptotic figures or mitotic activity (HE; magnification × 400).