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  Indian J Med Microbiol
 

Figure 2: Histopathology of primitive neuroectodermal tumor showing (A) Sheets and lobules of round cells with vesicular nuclei and clear cytoplasm (hematoxylin eosin; 100 X magnification) (B) Showing sheets of uniform round cells with high mitotic activity (H&E, x40) (C)The tumor cells demonstrate CD99 positivity

Figure 2: Histopathology of primitive neuroectodermal tumor showing (A) Sheets and lobules of round cells with vesicular nuclei and clear cytoplasm (hematoxylin eosin; 100 X magnification) (B) Showing sheets of uniform round cells with high mitotic activity (H&E, x40) (C)The tumor cells demonstrate CD99 positivity