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Figure 2: (a) The peripheral region of the mass showing nests of monotonous small polygonal cells with scanty eosinophilic cytoplasm and round nuclei with salt and pepper chromatin (H and E ×400); Inset shows immunohistochemical positivity for synaptophysin (×400); (b) The central portion of the tumor was entirely composed of bony trabeculae with intervening vascularized fibrofatty tissue (H and E 400)

Figure 2: (a) The peripheral region of the mass showing nests of monotonous small polygonal cells with scanty eosinophilic cytoplasm and round nuclei with salt and pepper chromatin (H and E ×400); Inset shows immunohistochemical positivity for synaptophysin (×400); (b) The central portion of the tumor was entirely composed of bony trabeculae with intervening vascularized fibrofatty tissue (H and E 400)