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Washington University Experience | NEOPLASMS (GLIAL) | Oligodendroglioma - IDH1 mutant, del 1p19q - Grade 3 | 21C1 Oligodendroglioma, focal anaplasia (Case 21) IDH1 WM (2)
2C1,2 IDH1 immunohistochemistry shows evidence for mutant tumor in all regions of the cortex and white matter, although tumor cell density varies.