MAPT and Lewy body dementia: Despite many similarities between PDD and DLB, some pathological differences have been demonstrated [39,84], including less severe and less extended Aβ load and lower tau load in the cortex and striatum in PDD compared to DLB [39,85,86]; and higher Aβ load in the cortex and claustrum [69,77], and in the entorhinal cortex, amygdala, and putamen in DLB [67].