MRI
Large mass centred on the genu of the corpus callosum and extends into both frontal lobes. It is heterogeneously enhancing with central areas of non-enhancement suggestive of necrosis, and intralesional haemorrhage.
Cerebral blood volume (CBV) increased corresponding to the enhancing portions. MR spectrscopy demonstrates reversal of the Cho:Cr, NAA depression, and lactate elevation.