Centred in the deep white matter of the posterior temporoparietal region on the left there is a 3 cm heterogeneous peripherally enhancing mass which abuts the ventricles and appears to have a degree of subependymal spread.
Nodular restricted diffusion is demonstrated around the margins of the lesion corresponding to the enhancing component, with no central restricted diffusion.
The mass has surrounded by a large amount of oedema which results in local positive mass effect, but no midline shift.
MR spectroscopy predominantly demonstrates elevated lactate but probably also has some elevation of choline and reduction in NAA, although the trace is sub-optimal.
MR perfusion demonstrates elevation of cerebral blood volume (CBV) in the enhancing component and reduction within the oedema.
A single small focus of T2 hyperintensity in the superior gyrus of the right frontal lobe is located the grey-white matter junctions.