MR images of the brain, including post-contrast sequences, demonstrate a large lobulated intraventricular mass filling and expanding the right body of the lateral ventricle, with a broad contact to the right lateral margin of the septum pellucidum, which is bowed to the left. The mass has a low T1 signal, heterogenous hyperintense T2 signal with small cysts, and focal areas with low signal on the SWI sequence, which may represent calcifications or blood products. There is a slight restriction on DWI / ADC and faint irregular contrast enhancement. There is dilatation of the lateral ventricles, notably the right, without transependymal cerebrospinal fluid permeation.
Impression: The findings are consistent with an intraventricular tumor, favoring the diagnosis of a central neurocytoma.