The lesion in the left medial cranial fossa measures 30 x 40 x 35 mm, has broad contact with the cranial vault, but there is no reaction the adjacent bone and no meningeal enhancement. There is no evidence of cortex or CSF cleft between the lesion and deep white matter, confirming intra-axial site. There is no contrast enhancement. There is no diffusion restriction. Cerebral parenchymal signal intensity and architecture are elsewhere normal. There is no hydrocephalus. There is abnormal signal within the mass within the left globe, and the globe is of slightly smaller volume of the right, consistent with vitreous haemorrhage and/or retinal detachment.
Conclusion: The tumour is almost certainly a diffuse astrocytoma IDH+ve and unlikely to have 1p19q deletion given prominent partial flair suppression. An outside possibility is a large DNET although this is much less likely.