Intra-axial mass lesion centred on the left superior frontal gyrus measuring 2.7 x 2.6 cm with cortical expansion and diffuse surrounding white matter FLAIR/T2 hyperintense signal change within the left frontal lobe with the involvement of the body of the corpus callosum. The posterior component is more T2 hyperintense and FLAIR hypointense. No susceptibility. No definite restricted diffusion, but antero-medially there is a moderate size region of postcontrast enhancement (some areas gyriform) and with some increased CBV. There is resultant mass-effect with asymmetry of the left lateral ventricle and left-to-right shift of midline structures measuring 4 mm. Spectroscopy shows prominant choline peak with reduction of NAA, increased mI and mild lactate peak.