World Health Organization Classification of Low-Grade Gliomas

 Tumor Type  Name  W.H.O. Grade
 Diffusely infiltrating astrocytic gliomas    
   Diffuse astrocytoma  II
   Fibrillary astrocytoma  II
   Protoplasmic astrocytoma  II
   Gemistocytic astrocytoma  II
 Astrocytic gliomas with more circumscribed growth  
   Pilocytic astrocytoma  I
   Pilomyxoid astrocytoma II
   Pleomorphic xanthoastrocytoma  II
   Subependymal giant cell astrocytoma  I
 Oligodendrogliomas and mixed gliomas    
   Oligodendroglioma  II
   Oligoastrocytoma  II
 Gliomas with ependymal differentiation    
   Ependymoma  II
   Myxopapillary ependymoma  I
   Subependymoma  I
 Other rare glial tumor types    
   Chordoid glioma of the third ventricle  II
   Astroblastoma not determined  
   Angiocentric glioma  I

Adapted from the W.H.O. classification of brain tumors (30)