IDH2 and pilocytic astrocytoma: The original pathology diagnoses of lesions were the following: five astrocytoma IDH-mutant, two oligodendroglioma IDH-mutant and 1p/19q co-deleted, one pilocytic astrocytoma, one ganglioglioma, and two diffuse gliomas with morphological features consistent with astrocytoma grade 2, with IDH wild type.