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89-year-old woman with probable Lewy body dementia. MR images show diffuse atrophy, without regional specificity, whereas FDG PET shows significant posterior cortical hypometabolism, with preservation of posterior cingulate and precuneus metabolism, typically associated with Lewy body dementia. DaTSCAN results (not shown) were supportive for Lewy body disease. Reproduced with permission from Ref. 49.
