gms | German Medical Science

Figure

Figure 2: a: Photomicrograph showing sheets of immature cells admixed with interspersed mature inflammatory cells including eosinophils and their precursors (H&E, x 200). b: Large atypical cells with vesicular nuclei, prominent nucleoli and scant cytoplasm, admixed with myeloid precursors and lymphocytes (H&E, x 200). c: Mixed population of large round cells, some with indented nuclei and numerous mature and immature eosinophils (H&E, x 400). d: Large cells with irregular nuclei and small nucleoli, infiltrating into the skeletal muscle fibers (H&E, x 400). e: The cells show diffuse strong positivity for myeloperoxidase (MPO) immunostain (x 400). f: CD43 is strongly positive in immature cells (x 400). g: Cells showing diffuse strong positivity for CD 117 immunostain (x 400). h: High Ki-67 proliferative index in immature precursors (x 400).