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Figure 4: Paraffin section showing (a) group of malignant cells (curved arrow) adjacent to the focus of hemorrhagic necrosis, (b) high power view showing round to oval cytotrophoblastic cells (straight arrow) with single vesicular nuclei and prominent nucleoli along with multinucleated syncytiotrophoblatic cell (curved arrow). Inset: Immunohistochemistry for epithelial membrane antigen (EMA) was positive in the cytotrophoblastic cells. [Hematoxylin and Eosin (a) ×40; (b) ×400] [Inset: Avidin Biotin Complex Immunoperoxidase Method ×400].

Figure 4: Paraffin section showing (a) group of malignant cells (curved arrow) adjacent to the focus of hemorrhagic necrosis, (b) high power view showing round to oval cytotrophoblastic cells (straight arrow) with single vesicular nuclei and prominent nucleoli along with multinucleated syncytiotrophoblatic cell (curved arrow). Inset: Immunohistochemistry for epithelial membrane antigen (EMA) was positive in the cytotrophoblastic cells. [Hematoxylin and Eosin (a) ×40; (b) ×400] [Inset: Avidin Biotin Complex Immunoperoxidase Method ×400].