378940.fig.003a
(a)
378940.fig.003b
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378940.fig.003c
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Figure 3: (a) The biopsy specimen demonstrates two distinct areas. Prominent bony trabeculae are seen on the left of the image (arrows), and cellular proliferation is seen on the right (open arrows). (b) The corresponding immunohistochemistry stain demonstrates strong expression of the vascular marker CD31 in the cellular areas, supporting a vascular neoplasm. (c) High-powered image of immunohistochemistry stain demonstrates strong expression of the vascular marker CD31 in the endothelial cells lining the vascular spaces, highlighting the areas of vascular proliferation supporting a vascular neoplasm.