<unk><unk>  may be classified into several subtypes based on the origin (primary and secondary) and the type of tumor cell (astrocytic, oligodendroglial, and mixed).
Gliomatosis cerebri classification
Meningioma classification
Glioma classification
Meningitis classification
Subependymal giant cell astrocytoma diagnostic criteria
Glioblastoma multiforme classification
Subdural hematoma classification
Ganglioglioma classification