Fig. 3From: How we read: the combined use of MRI and novel PET tracers for the characterisation and treatment planning of masses in neuro-oncologyFDG-PET (a) in a patient with systemic lymphoma shows abnormal intracranial uptake (asterisk), consistent with secondary CNS involvement. This is localised to the hypothalamus on the post-contrast MRI (b). The post-contrast MRI (c) also demonstrates more extensive leptomeningeal disease than is appreciable on PET, including along the ependymal surface of the fourth ventricle (arrow)Back to article page