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Washington University Experience | NEOPLASMS (GLIAL) | Oligodendroglioma - IDH1 mutant, del 1p19q - Grade 2 | 8B Oligodendroglioma WHO II (Case 8) H&E 3.jpg
H&E shows fragments of brain parenchyma involved by a variably cellular, diffusely infiltrative glioma with the canon of well differentiated oligodendroglioma features. (H&E) Mitotic figures are not readily identified. and there is no microvascular proliferation or necrosis. ---- Not Shown: Proliferative index Ki67 stains a regionally variable proportion of tumor nuclei ranging up to 1.3%
