Fig. 2: Microscopic features of DCS.

“Light and dark” areas, with interspersed islands of more densely cellular tumor (a DCS_2; b DCS_4; c DCS_6). Whorled-to-fascicular homogeneous fibrosarcoma-like areas (d DCS_2) with frequent mitoses and powdery chromatin (e DCS_2). Florid microvascular proliferation in a checkerboard pattern at the tumor’s interface with cortex (f DCS_2).