Fig. 1. Histopathology of the thigh biopsy (A) low-power image (hematoxylin and eosin, ×100) and (B) high-power image (hematoxylin and eosin, ×400) showing medium to large cells with a cleaved nucleus and eosinophilic cytoplasm. (C) Tumor cells are diffusely positive for myeloperoxidase (immunohistochemical stain, ×400).

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