Cerebellopontine angle mass = Vestibular schwannoma (AKA acoustic neuroma). Derived from Schwann cells, which are of neural crest origin.
Going over other choices (FA 19 514):
Oligodendrocytes are part of the CNS so a tumor there would be an oligodendroglioma which is relatively rare, and in frontal lobes. On histology you would see fried egg appearance with chicken wire capillaries.
Glioblast tumor would be a glioblastoma multiforme which is common and has a 1 year survival, its the one with the butterfly glioma crossing the corpus callosum.