Papillary glioneuronal tumors represent a new and rare entity of an uncommon morphologic
subtype of low-grade mixed neuronal-glial neoplasms with an unclear etiology. They
are described as benign lesions with extraventricular localization. We report the
second case of papillary glioneuronal tumor with recurrent nature after gross-total
resection, and the third case of this tumor with intraventricular localization. While
conventional magnetic resonance imaging of papillary glioneuronal tumors is well described
in literature, there are no data based on advanced magnetic resonance techniques.
The present article represents a review of clinicopathological and both conventional
and advanced magnetic resonance imaging characteristics of papillary glioneuronal
tumors, with focus on 2 cases with atypical course and localization.
Keywords
papillary glioneuronal tumor - recurrence - intraventricular localization - magnetic
resonance imaging - diffusion - perfusion - magnetic resonance spectroscopy