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A : Elongated tumor cells occasionally form perivascular pseudorosettes (H&E ×100). B : EMA-positive "dot-like" structures correspond to the microlumens (DAB ×400). C : Tumor cells in perivascular pseudorosettes express GFAP (DAB ×200). D : Tumor cells in perivascular pseudorosettes express S-100 (H&E ×200). E : Tumor consist of calcification (H&E ×100).
