CDKN2A and oligodendroglioma: The diagnosis was grade 2 IDH1 R132H mutant, 1p/19q codeleted oligodendroglioma with the following histomolecular characteristics: Ki‐67 < 5%, absence of mitoses, necrosis, or microvascular proliferations, pTERT mutant, and CDKN2A/B intact.