OBJECTIVE: To demonstrate that malignant glioneuronal tumors comprise a large spectrum of neoplasms, without mature ganglion-like cells, that may histologically resemble any malignant glioma ...

such as anaplastic hemangiopericytoma (8 cases), papillary tumors of the pineal region (2 cases), atypical choroid plexus papillomas (2 cases), rosette-forming glioneuronal tumor of the fourth ...