A large mass of heterogeneous signal and enhancement is seen within the frontal horn of the left lateral ventricle. The septum pellucidum is bowed to the left. The mass abuts the head of the caudate nucleus. There is obstructive hydrocephalus evident with transependymal spread on the right. Overall dimensions of the mass are 37.5 millimetres SI, 35 mm transverse and 36 mm AP. There is raised mild pulsatile and minimally increased choline within the mass. There is elevated cerebral blood volume (CBV) within the lesion.
Findings compatible with a central neurocytoma.