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Washington University Experience | NEOPLASMS (MENINGIOMA) | Brain Invasion | 4C2 Meningioma & brain invasion (Case 4) GFAP 2.jpg
A GFAP immunostain highlights widespread entrapped brain tissue within tumor at the brain/tumor interface. ---- A Ki-67 immunostain shows an overall low proliferation index focally elevated to 4.6%. ---- Comment: The overall findings describe a brain-invasive meningioma, WHO grade 2.
