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Washington University Experience | NEOPLASMS (GLIAL) | Oligodendroglioma - IDH1 mutant, del 1p19q - Grade 3 | 28A2 Oligodendroglioma, WHO III (Case 28) 2.jpg
H&E stained sections show multiple fragments of brain parenchyma involved by a hypercellular, high grade diffusely infiltrative oligodendroglial neoplasm with scattered mitotic figures, areas of microvascular proliferation, along with geographic and pseudopalisading necrosis.