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The neoplasm is composed of high grade undifferentiated cells with varying amounts of eosinophilic cytoplasm, vesicular chromatin, and prominent nucleoli. Many apoptotic bodies and foci or intratumoral necrosis are seen. A minority population of cells exhibit a rhabdoid appearance with eccentric nuclei with abundant cytoplasm . A. Hematoxylin and eosin (H&E) stain, 20X; B. H&E, 40X; C. H&E, 63X; D. INI1, 40X; E. AE1/3, 40X, F. EMA, 40X.
