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Washington University Experience | NEOPLASMS (GLIAL) | Oligodendroglioma - IDH1 mutant, del 1p19q - Grade 3 | 20C Oligodendroglioma, anaplastic Grade 3 (Case 20) Ki67 20X 1
The Ki67 proliferation rate is estimated to be ~20%. ---- Not shown: A prior biopsy was re-analyzed in 2019 and showed 1p/19q codeletion. Therefore, the collective morphological and immunohistochemical features are consistent with a diagnosis of recurrent anaplastic oligodendroglioma, IDH1 (R132H) mutant, 1p/19q co-deleted, WHO grade 3.
