(a)
(b)
(c)
(d)
Figure 2: (a) 100x angiosarcoma H&E demonstrating tumor with high cellularity and prominent vascular network. (b) 400x angiosarcoma H&E demonstrating vasculature lined by plump, pleomorphic, endothelial cells. (c) 100x demonstrating CD31 positivity. (d) 100x demonstrating CD34 positivity.