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Figure 3: (a) Histopathological section at low power view shows small round cells densely packed in sheets, and around the blood vessels (red arrow) along with necrotic areas (black arrow). H and E100X. (b) Section shows rosettes formation (arrow) by small round cells. H and E200X. (c) High power view shows round to oval cells forming rosettes, and with conspicuous nucleoli and scant amount of cytoplasm. H and E400X. (d and e) Immunohistochemistry was strongly positive for Vimentin (d) and CD99 (e). (f) Section shows nuclear positivity for Ki67

Figure 3: (a) Histopathological section at low power view shows small round cells densely packed in sheets, and around the blood vessels (red arrow) along with necrotic areas (black arrow). H and E100X. (b) Section shows rosettes formation (arrow) by small round cells. H and E200X. (c) High power view shows round to oval cells forming rosettes, and with conspicuous nucleoli and scant amount of cytoplasm. H and E400X. (d and e) Immunohistochemistry was strongly positive for Vimentin (d) and CD99 (e). (f) Section shows nuclear positivity for Ki67