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Washington University Experience | NEOPLASMS (GLIAL) | Oligodendroglioma - IDH1 mutant, del 1p19q - Grade 2 | 3B2 Oligodendroglioma (Case 3) H&E 5 Smear

3B2,3 -Sections show a hypercellular neoplasm composed of round cells with oligodendroglial features, show variable amounts of peri-nuclear cytoplasmic clearing. Angular nuclei are present in areas of increased cellularity and the neoplastic cells show nuclei with increased angulation. Mitoses are infrequent (2/10HPF). (H&E)

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