pilomyxoid astrocytoma


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  • Clinical

    • children
    • site: hypothalamus, optic chiasm
    • WHO grade II

  • Histology

    • mucoid matrix
    • monomorphic tumor cells with angiocentric/pseudorosette pattern
    • lacks Rosenthal fibers and eosinophilic granular bodies

  • Stains

    • GFAP+
    • Ki67 < 20%
    		•