Neuropathologic correlates of white matter hyperintensities

Abstract

Objective: White matter hyperintensities (WMH) are commonly seen on neuroimaging scans, but their underlying histopathologic substrate is unclear. The aim of this work was to establish the pathologic correlates of WMH in unselected elderly cases using two study designs. To avoid potential bias from comparisons of different anatomic regions, study 1 compared, region-by-region, the severity of WMH determined in vivo with measures of each of the major white matter (WM) components. Study 2 compared the histopathology of WMH with normal WM.