Schwannoma of the Appendix Orifice

Figure 2

(a) Spindle cell lesion in appendix wall predominantly in muscularis propria. (b) Associated benign lymphoid reaction-typical of gastrointestinal GI schwannoma. (c) S100 positivity in the lesion. (d) Bundles of bland spindle cells (high power). (e) Bundles of bland spindle cells (low power).

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