Fig. 4
From: Primary Ewing’s sarcoma of the kidney: a rare masquerader of renal cell carcinoma on imaging
![Fig. 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs43055-022-00718-y/MediaObjects/43055_2022_718_Fig4_HTML.jpg)
A Hematoxylin and eosin stained section (40×) shows tumor cells arranged in sheets with hyperchromatic nuclei and scant cytoplasm. B On Immunohistochemistry, tumor cells are positive for CD99. C The tumor cells are negative for leukocyte common antigen (LCA), synaptophysin and chromogramin