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Figure 2: Histopathologic section showing interlacing fascicles of spindle-shaped tumor cells with minimal pleomorphism and kinky nuclei (H and E, ×400). Inset shows tumor cells positive for S-100 immunostain (IHC, ×400)

Figure 2: Histopathologic section showing interlacing fascicles of spindle-shaped tumor cells with minimal pleomorphism and kinky nuclei (H and E, ×400). Inset shows tumor cells positive for S-100 immunostain (IHC, ×400)