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Washington University Experience | NEOPLASMS (GLIAL) | Oligodendroglioma - IDH1 mutant, del 1p19q - Grade 2 | 13C Oligodendroglioma, Grade II (Case 13) H&E Ki67.jpg
The proliferation marker Ki67 is low overall, focally reaching up to 2.3%. ---- Not shown: The tumor is negative for p53. FISH studies demonstrate 1p/19q deletion. ---- Comment: The overall histomorphologic and immunophenotypic characteristics are those of oligodendroglioma, WHO grade 2.
