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Washington University Experience | NEOPLASMS (EMBRYONAL) | ATRT - Atypical Teratoid Rhabdoid Tumor | 8F ATRT (Case 8) INI1 20X
Tumor cells are not immunoreactive for INI1 although the non-neoplastic endothelial cells are strongly immunoreactive. (INI1 IHC) Taken together, the histomorphologic features and immunostain results are diagnostic of an AT/RT, WHO grade IV.
