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Multiple FLAIR hyperintensities scattered throughout the periventricular and subcortical white matter likely reflect chronic small vessel ischaemia, prominent in severity for this age. Even allowing for a degree of exvacuo dilatation related to this, the lateral and third ventricles are prominent in size compared to the sulcal pattern and the corpus callosum is thinned.
There is disproportionate crowding of the sulci superiorly near the vertex and widening of the sylvian fissures. The flow void is exaggerated across the aqueduct of Sylvius. Patency is also demonstrated on the CSF flow study (not shown)
Appearances compatible with normal pressure hydrocephalus.