202960.fig.002a
(a)
202960.fig.002b
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202960.fig.002c
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Figure 2: One malignant gastric schwannoma case. (a) Tumor cells show high variation of nuclear shape and size with mitosis (H&E, original magnification ×200). Diffuse positive staining is seen for (b) S-100 protein (positive < 20%), (c) CD56 (>50%), and (d) vimentin (>50%) in tumor cells.