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Figure 2: (a) Photomicrograph showing a tumor composed of small nests of neuroendocrine cells (*) admixed with ganglion cells (thin arrow) and schwanniann cells (thick arrow), H and E, ×100. (b) Immunohistochemical staining for chromogranin highlights neuroendocrine (*) and ganglion cell (thin arrow) components, IHC ×100. (c) The schwannian component, diffusely immunopositive for S-100, IHC ×100

Figure 2: (a) Photomicrograph showing a tumor composed of small nests of neuroendocrine cells (*) admixed with ganglion cells (thin arrow) and schwanniann cells (thick arrow), H and E, ×100. (b) Immunohistochemical staining for chromogranin highlights neuroendocrine (*) and ganglion cell (thin arrow) components, IHC ×100. (c) The schwannian component, diffusely immunopositive for S-100, IHC ×100