Primitive Neuroectodermal Tumor/Ewing Sarcoma Presenting with Pulmonary Nodular Lesions

<div>(a) Photomicrograph showing sheets of proliferating round cells, diffuse proliferation of cells with indistinct cytoplasm and small basophilic nuclei (HE ×400). (b) Strong and membranous CD99 immunoreactivity (CD99 immunohistochemical stain ×400). (c) shows abundant cytoplasmic glycogen in the cells of Ewing sarcoma with PAS stain. (PAS stain ×400).</div>

Case Reports in Oncological Medicine

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Figure 4

Figure 4: Primitive Neuroectodermal Tumor/Ewing Sarcoma Presenting with Pulmonary Nodular Lesions 