label: Rosette-Forming Glioneuronal Tumor of the Fourth Ventricle
label_lc: rosette-forming glioneuronal tumor of the fourth ventricle
description: "A central nervous system neoplasm arising from the fourth ventricle. It is characterized by the presence of neurocytes forming pseudorosettes and astrocytes which contain Rosenthal fibers. Cytologic atypia is minimal."