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Washington University Experience | NEOPLASMS (GLIAL) | Oligodendroglioma - IDH1 mutant, del 1p19q - Grade 3 | 4A2 Oligodendroglioma, anaplastic WHO Grade 3, Case 4) H&E 5
The neoplasm forms sheets of regularly spaced cells. The neoplastic cells have ovoid to round nuclei with highly irregular nuclear contours, notching, and variable chromatin ranging from hyperchromatic to stippled. Portions of the specimen are markedly hypercellular and the mitotic index in these areas numbers 7 mitoses/10HPF.
