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Washington University Experience | NEOPLASMS (PINEAL) | Pineoblastoma | 3D Pineoblastoma (Case 3) GFAP

Immunostaining for gliofibrillary acid protein (GFAP) is negative in the tumor cells themselves but highlights entrapped glial elements. ---- Comment: The morphological and immunohistochemical features of the recurrent tumor are most consistent with a metastatic site of a pineoblastoma.

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