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Washington University Experience | NEOPLASMS (MENINGIOMA) | Brain Invasion | 9E3 Meningioma, brain invasion (Case 9) TRI 20X
Additional relevant images. (Trichrome stain) ---- Comment: The collective features are consistent with atypical meningioma with brain invasion, CNS WHO grade 2. There are no additional atypical features. Ki-67 proliferation index is overall low with focal areas estimated at 3%.
