According to the old 2007 WHO classification of the central nervous system tumors,<unk> s were divided into five subtypes:<unk>  (OII), anaplastic<unk>  (OIII), oligoastrocytoma (OAII), anaplastic oligoastrocytoma (OAIII), and glioblastoma with<unk>  component (GBMo). But the new 2016 edition of WHO classification of gliomas is based not only on histopathologic appearance but also on well-established molecular parameters, and oligodendroglial tumors are now more narrowly defined by molecular diagnostics to include only those diffuse gliomas having both a mutation in isocitrate dehydrogenase type 1 (IDH1) or type 2 (IDH2) and codeletion of chromosomes 1p and 19q. This new pattern of classification divides<unk> s into grade II tumors including<unk>  IDH-mutant and 1p/19q-codeleted,<unk>  NOS, oligoastrocytoma NOS, and grade III tumors including anaplasticoligodendroglioma IDH-mutant and 1p/19q-codeleted, anaplastic<unk>  NOS, and anaplastic oligoastrocytoma NOS.
Oligodendroglioma classification
Oligoastrocytoma classification
Germinoma classification
Meningioma classification
Myxoma classification
Medulloblastoma classification
Ganglioglioma classification
Paraganglioma classification