Fig. 14

Metastasis. Axial contrast-enhanced CT, with brain (a) and bone (b) windows showing a left parietal lytic, widely necrotic, lesion with intra- and extracranial extension. MRI better depicts extraosseous spread on both intra- and extracranial aspects, with dural displacement and thickening, better seen on coronal T2w image (c). The lesion presents diffusion restriction (d) and enhancement (e, f) of the peripheral solid component. T1w (e) and T1w after contrast administration with fat saturation (f) images