32. Brain tumors and grades (I)

According to “The 2016 World Health Organization Classification of Tumors of the Central Nervous System”:

1. Pilocytic astrocytoma: WHO grade II ?
2. Anaplastic astrocytoma: WHO grade IV ?
3. Anaplastic oligodendroglioma: WHO grade III ?
4. Ependymoma: WHO grade I ?
5. Gangliocytoma: WHO grade I ?
6. Pineoblastoma: WHO grade IV ?

Answers