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Published on: November 6, 2017
Pathological lesions in vascular dementia
Leonardo Pantoni1, Vanessa Palumbo, Cristina Sarti
1Department of Neurological and Psychiatric Sciences, University of Florence, Viale Morgagni 85, 50134 Florence, Italy. pantoni@neuro.unifi.it
Insights
Diagnosing vascular dementia (VaD) requires identifying vascular lesions and ruling out other changes. Standardizing pathological examination is crucial for understanding VaD
Area of Science:
- Neurology
- Pathology
- Neuroscience
Background:
- Vascular dementia (VaD) diagnosis relies on pathological evidence of vascular lesions and absence of age-expected degenerative changes.
- VaD is recognized as a heterogeneous group of conditions, yet the specific vascular and parenchymal changes linked to the clinical syndrome are not fully understood.
- Current research faces challenges in clarifying clinical-pathological correlations due to variations in lesion assessment across studies.
Purpose of the Study:
- To highlight the need for a consensus on harmonizing the pathological examination of vascular lesions in dementia cases.
- To emphasize the potential of animal models in understanding the link between cerebrovascular diseases and cognitive impairment.
- To present an ongoing survey on pathological laboratory procedures for assessing dementia-associated lesions.
Main Methods:
- Review of recent clinical-pathological series on vascular dementia.
- Analysis of diagnostic criteria for vascular dementia.
- Presentation of an ongoing survey on pathological assessment methods.
Main Results:
- Significant heterogeneity exists in the types of vascular lesions identified in different studies.
- Lack of standardized pathological definitions hinders clarification of clinical-pathological correlations in VaD.
- An ongoing survey is collecting data on current pathological laboratory practices.
Conclusions:
- A consensus is urgently needed to standardize the pathological examination of vascular lesions in dementia.
- Animal models may offer valuable insights into the pathophysiology of vascular cognitive impairment.
- Standardized pathological assessment is essential for advancing our understanding and diagnosis of vascular dementia.
Abstract:
According to current diagnostic criteria, a definite diagnosis of vascular dementia (VaD) can be reached on pathological grounds by showing the presence of vascular lesions and the absence of degenerative changes exceeding those expected for age. However, while it is commonly accepted that VaD is a group of heterogeneous entities rather than a process with a unique pathological substrate, the spectrum of vessel and parenchyma changes etiologically associated with the clinical syndrome remains basically unidentified. The review of some recent clinical-pathological series shows that different studies have assessed the presence of dissimilar vascular lesions and that, in many cases, no pathological definition was given. This has hindered the clarification of clinical-pathological correlations in the field of VaD. In this scenario, the use of animal models of cerebrovascular diseases may help to elucidate the type of lesions possibly linked with cognitive impairment in humans and might provide insight into some of the pathophysiological mechanisms of vascular cognitive impairment. A consensus is today needed in order to harmonize the pathological examination of vascular lesions in cases of dementia. An ongoing survey aimed at collecting information about the procedures used in different pathological laboratories in the assessment of lesions possibly associated with dementia is finally presented.
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