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There is severe temporal lobe atrophy, somewhat worse on the left side. The hippocampi are also affected but not disproportionately so. Prominence of the left Sylvian fissure is mild, and attributed to the temporal atrophy. There is also mild biparietal atrophy, without significant frontal lobe atrophy. Apparent volume loss of the posterior aspect of the corpus callosum is more pronounced than usually seen from vascular indentation alone. The volume of the posterior fossa structures is preserved. A mildly prominent cisterna magna is noted - a normal variant. There is no hydrocephalus. No abnormal signal, diffusion restriction or magnetic susceptibility is seen.