Fig. 4

A 26-year-old male with ocular melanoma with extraocular extension and intracranial metastases. a Axial T1-weighted MR image showing a heterogeneous mass involving the right orbit with areas of T1 hyperintensity (arrow) and extraocular extension. b The mass is heterogeneously hypointense on the corresponding axial T2-weighted MR image (arrow). c On corresponding axial diffusion-weighted MRI, the mass shows restricted diffusion (arrow). d Axial contrast-enhanced T1-weighted MR image shows heterogeneous enhancement of the lesion (arrow). e Axial T2-weighted MR image shows metastatic lesions in the frontal lobes showing T2 hypointensity (arrows) with surrounding vasogenic edema. f The lesions are hyperintense on the corresponding axial T1-weighted MR image of the brain (arrows). g On the corresponding axial susceptibility-weighted (SW) MRI the lesions are hypointense (arrows) confirming a haemorrhagic component