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Well defined heterogeneous parafalcine mass in the right paracentral lobule, appears intra-axial and located at the grey-white matter junction. Adjacent high T2/FLAIR signal abnormality extends into pre and post frontal gyri. Heterogeneous enhancement of the mass with regions of susceptibility artefact, no diffusion restriction abnormality. Adjacent cortex is not thickened. No other lesion seen. On perfusion imaging, cerebral blood volume (CBV) is low in the cystic component of the lesion, but mildly increased in the solid component. It is markedly reduced in the non-enhancing high T2 signal white matter. Spectroscopy suggests elevation of choline and reduced NAA over the tumour, but shows a normal trace in the high T2 signal white matter.
Overall features favour a metastasis.