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Washington University Experience | NEOPLASMS (EMBRYONAL) | ATRT - Atypical Teratoid Rhabdoid Tumor | 9E1 ATRT (Case 9) N19 GFAP WM
9E1,2 Sections which include cerebral cortex show patchy neoplastic infiltration of the parenchyma including areas adjacent to the ependyma and admixed with non-neoplastic germinal matrix. GFAP immunoreactivity shows prominent staining in reduplicated ependyma which likely reflects collapse of the hydrocephalic expanded gliotic ventricular lining
