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T2 MRI displays a cluster of hyperintense nodules in the deep cortical ribbon and subcortical white matter in the posterosuperior right parietal lobe. The nodules are of varying size, coalescing at some points. There is no suppression on FLAIR. There is no mass effect or restricted diffusion. They do not display susceptibility on gradient echo imaging.
These findings are highly suggestive of multinodular and vacuolating neuronal tumour of the cerebrum (MVNT). The lesion has remained stable over a period of 14 months, and the patient is under MRI surveillance.