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Figure 2: Large rounded circumscribed lesion walled in by thick collagenous band (a). Lesion has spindled cells with wavy nuclei (*b) that strongly expresses S-100 antigen confi rming Schwannian origin (b, inset). Large zone of xanthomatous change present in the tumor (c, X) (a-c: H and E scale bar: 5 mm, 50 μm, 500 μm; b: inset: S-100 immunoperoxidase)

Figure 2: Large rounded circumscribed lesion walled in by thick collagenous band (a). Lesion has spindled cells with wavy nuclei (*b) that strongly expresses S-100 antigen confi rming Schwannian origin (b, inset). Large zone of xanthomatous change present in the tumor (c, X) (a-c: H and E scale bar: 5 mm, 50 μm, 500 μm; b: inset: S-100 immunoperoxidase)