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Washington University Experience | NEOPLASMS (GLIAL) | Ependymoma - Microscopic | 10F2 Ependymoma (Case 10F) CD99 1

CD99 immunohistochemistry stains projections on pseudorosettes and perinuclear dot-like positivity similar to D2-40 immunoreactivity. (CD99 IHC) ---- The diagnosis made was Grade 2 ependymoma.

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