PDGFRA and subependymal giant cell astrocytoma: The spectrum of supratentorial intraventricular masses discussed includes colloid cysts, subependymal giant cell astrocytomas (SEGA), ependymomas, gangliogliomas, myxoid glioneuronal tumors, PDGFRA p.K385-mutant (MGNT), central neurocytomas (CN), high-grade gliomas (HGG), pilocytic astrocytomas (PA), cavernous malformations, and other embryonal tumors.