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Updated: Aug 19, 2026

Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases
Published on: July 28, 2013
Frontal lobe degeneration of non-Alzheimer type. IV. White matter changes
Abstract:
The cerebral white matter in 16 cases of frontal lobe non-Alzheimer degeneration with dementia (FLD), four cases of Pick's disease and five age-matched controls was studied microscopically. All cases of dementia had white matter alterations, consisting of gliosis and loss of myelin, with a regional spread of changes that roughly corresponded with that of the cortical degeneration. The white matter changes were less severe than the cortical alterations, although the relative degree of severity between grey and white matter pathology varied from case to case. The white matter changes were in some respects similar in FLD and Pick's disease. They differed from those of other organic dementias. In FLD, they seem to be part of the histopathologic picture and to be secondary to the cortical degeneration.
Insights
Frontal lobe degeneration with dementia (FLD) and Pick's disease involve white matter damage, including gliosis and myelin loss. These changes correlate with cortical degeneration, differing from other dementias.
Area of Science:
- Neuropathology
- Neurodegenerative Diseases
- Dementia Research
Background:
- Cerebral white matter pathology is implicated in various neurodegenerative conditions.
- Frontal lobe degeneration with dementia (FLD) and Pick's disease are distinct forms of dementia affecting cognitive function.
Purpose of the Study:
- To microscopically investigate and compare white matter alterations in FLD, Pick's disease, and control cases.
- To understand the relationship between cortical and white matter pathology in these dementias.
Main Methods:
- Microscopic examination of cerebral white matter.
- Histopathological analysis of gliosis and myelin loss.
- Comparison across FLD, Pick's disease, and age-matched controls.
Main Results:
- All dementia cases exhibited white matter alterations, including gliosis and myelin loss.
- White matter changes regionally corresponded with cortical degeneration but were less severe.
- Pathology in FLD and Pick's disease showed similarities and differed from other organic dementias.
Conclusions:
- White matter changes are a feature of FLD and Pick's disease.
- In FLD, white matter alterations appear secondary to cortical degeneration.
- The distinct white matter pathology differentiates FLD and Pick's disease from other dementias.
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