Ewing Sarcoma : CD99
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![Bone_EwingSarcoma1_CD99_Resized.jpg](/slides-13/slides/Bone_EwingSarcoma1_CD99_Resized.jpg)
Comments:
Expression of CD99 (013; HBA71; MIC2) - cell membrane protein - is consistently seen in ES/PNET; however it is not specific and may also be seen in embryonal rhabdomyosarcoma, other sarcomas, and lymphoblastic lymphoma. Image courtesy of Dr. Jean-Christophe Fournet, Paris, France; humpath.com