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Updated: May 8, 2026

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Published on: April 23, 2021
[Cerebral microbleeds in cerebrovascular and neurodegenerative diseases]
Abstract:
Cerebral microbleeds (CMBs) are a kind of the morphological changes of the brain associated with damage to small cerebral arteries detected on GRE MRI as small, round, well-defined, hypointense lesions, sized 3-10 mm, which indicate the deposition of hemosiderin. CMBs can be detected in cerebral microangiopathy of different origins (cerebral amyloid angiopathy, hypertensive arteriopathy, vasculitis, hereditary angiopathy) and may be a predictor of macrobleeds. This article discusses the clinical significance of CMBs in cerebrovascular, neurodegenerative diseases, cognitive disorders as well as the possibility of using antiplatelet agents and anticoagulants in patients with CMBs.
Insights
Cerebral microbleeds (CMBs) are small brain lesions indicating arterial damage. These findings are linked to various neurological conditions and may predict larger bleeds, influencing treatment strategies.
Area of Science:
- Neurology
- Radiology
- Vascular Biology
Context:
- Cerebral microbleeds (CMBs) are identified as small, hypointense lesions on GRE MRI, signifying hemosiderin deposition due to small cerebral artery damage.
- CMBs are associated with diverse cerebral microangiopathies, including cerebral amyloid angiopathy, hypertensive arteriopathy, vasculitis, and hereditary angiopathies.
- These microbleeds can serve as a potential predictor for the occurrence of macrobleeds.
Purpose:
- To discuss the clinical significance of cerebral microbleeds (CMBs) in the context of cerebrovascular and neurodegenerative diseases.
- To explore the role of CMBs in cognitive disorders.
- To evaluate the potential use of antiplatelet agents and anticoagulants in patients diagnosed with CMBs.
Summary:
- Cerebral microbleeds (CMBs) are morphological changes in the brain, visualized as small lesions on MRI, indicative of small vessel disease.
- Their presence is noted across various microangiopathies and they may portend future macrobleeds.
- The article reviews the clinical relevance of CMBs in neurological conditions and their implications for anticoagulant and antiplatelet therapy.
Impact:
- Understanding CMBs is crucial for diagnosing and managing cerebrovascular and neurodegenerative diseases.
- Identifying CMBs can refine risk stratification for hemorrhagic events.
- This review informs clinical decisions regarding antithrombotic therapies in patients with CMBs, balancing bleeding risk and thrombotic risk.
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