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Hematoxylin and eosin staining of the tumor. (A) The tumor cells exhibit oligodendroglia-like morphology embedded in mucoid matrix with floating neurons (arrow), which is the so-called specific glioneuronal element. (B) The tumor cells are arrayed radiating towards a capillary (arrows), which is a perivascular pseudorosette. (C) The tumor cells show high cellularity and marked nuclear atypia.
