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Updated: May 16, 2026

Evaluation of the Cognitive Performance of Hypertensive Patients with Silent Cerebrovascular Lesions
Published on: April 23, 2021
[Vascular cognitive impairment: the relationship between hypertensive small vessel disease and cerebral amyloid
1Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan.
Abstract:
Vascular cognitive impairment comprises a spectrum ranging from the prodromal stage of vascular mild cognitive impairment (v-MCI) to full-brown vascular dementia with a varying degree of Alzheimer's pathology and vascular comorbidity. In this review, we discuss the relationships of hypertensive small vessel disease (HSVD) and cerebral amyloid angiopathy (CAA), which are the representative types of subcortical and cortical small vessel diseases, respectively. HSVD predominantly affects the penetrating artery territories, and CAA is located at the cerebral cortices admixed with senile plaques and neurofibrillary tangles. The former causes lacunar infarcts and white matter lesions, whereas the latter results in subcortical hemorrhage and white matter lesions. Recent development in magnetic resonance imaging has enabled differentiation of CAA-related micro-lesions including lobar cerebral microbleeds, cortical subarachnoid hemorrhage, and cortical microinfarcts. Both HSVD and CAA are differentially located in the brain, but patients with higher degree of CAA are predisposed to have more severe HSVD. Therefore, it is likely that these diseases progress in concert with each other with advancing age. The interaction between HSVD and CAA may explain the pathophysiology of VCI and but further investigations are required to understand this.
Insights
Hypertensive small vessel disease (HSVD) and cerebral amyloid angiopathy (CAA) are key contributors to vascular cognitive impairment. These conditions often coexist and worsen with age, impacting brain health.
Area of Science:
- Neurology
- Neuroscience
- Pathology
Context:
- Vascular cognitive impairment (VCI) spans from mild cognitive impairment to dementia, often with mixed pathologies.
- Hypertensive small vessel disease (HSVD) and cerebral amyloid angiopathy (CAA) represent distinct small vessel diseases affecting different brain regions.
Purpose:
- To review the relationship between HSVD and CAA in the context of VCI.
- To explore how these pathologies interact and contribute to cognitive decline.
Summary:
- HSVD affects penetrating arteries causing lacunar infarcts and white matter lesions.
- CAA is located in cerebral cortices, associated with microbleeds and cortical microinfarcts.
- Despite different locations, severe CAA correlates with more severe HSVD, suggesting a combined progression.
Impact:
- Understanding the interplay between HSVD and CAA is crucial for elucidating VCI pathophysiology.
- Advanced MRI techniques aid in differentiating CAA-related micro-lesions.
- Further research is needed to fully understand the synergistic effects of HSVD and CAA on brain aging and VCI.
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