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  Indian J Med Microbiol
 

Figure 2: Ewing sarcoma (a and b). (a) Perivascular, rosettoid arrangement of malignant small round cells (H and E, ×400). (b) Diffuse, immunostaining for CD99/MIC2 (Diaminobenzidine, ×400). Case of Ewing sarcoma treated with neoadjuvant chemotherapy (c-e). (c) Pre-treatment microscopic features of Ewing sarcoma (H and E, ×400. (d) Diffuse CD99/MIC2 immunostaining (Diaminobenzidine, ×400). (e) Post-chemotherapy response: hyalinization and scattered inflammatory cells with no residual tumor (H and E, ×200)

Figure 2: Ewing sarcoma (a and b). (a) Perivascular, rosettoid arrangement of malignant small round cells (H and E, ×400). (b) Diffuse, immunostaining for CD99/MIC2 (Diaminobenzidine, ×400). Case of Ewing sarcoma treated with neoadjuvant chemotherapy (c-e). (c) Pre-treatment microscopic features of Ewing sarcoma (H and E, ×400. (d) Diffuse CD99/MIC2 immunostaining (Diaminobenzidine, ×400). (e) Post-chemotherapy response: hyalinization and scattered inflammatory cells with no residual tumor (H and E, ×200)