What would be your next best imaging choice?
Either contrast-enhanced CT or MRI is reasonable. This patient will need an MRI at some point but depending on availability a contrast-enhanced CT may be able to narrow the differently slightly.
There is a large intracranial mass lesion centred on the right frontal lobe measuring approximately 45 mm in maximum diameter with a large amount of surrounding vasogenic oedema. The lesion leads to a mass effect with effacement of the frontal horn of the right lateral ventricle and is approximately 13 mm of right-to-left subfalcine herniation and midline shift. No other parenchymal lesions. No acute intra orextra-axial haemorrhage.