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. 2020 Nov 11;20:280. doi: 10.1186/s12893-020-00948-9

Fig. 2.

Fig. 2

Pathological examination of the surgical specimen. HE staining (a and b) indicated that the tumor was composed of a population of small round cells arranged in sheet. Immunohistochemical staining was positive for c CD99, d CD56, e syn and f Ki67 (50%) and negative for g S100. Magnification details: a × 100; b × 200; c × 100; d × 100; e × 200; f × 100; g × 100. g EWSR1 gene translocation was detected by fluorescence in situ hybridization testing (FISH)