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Published on: September 25, 2019
The arterial lesions underlying cerebral infarction
1Department of Preventive Cardiology, National Cardiovascular Center, 5-7-1 Fujishirodai, Suita, Osaka 565-8565, Japan. jogata@hsp.ncvc.go.jp
Insights
This review examines arterial lesions causing cerebral infarction, including atherothrombotic, cardioembolic, and lacunar strokes. Postmortem examination of acute stroke patients is crucial for understanding stroke mechanisms.
Area of Science:
- Neurology
- Pathology
- Cardiovascular Medicine
Background:
- Cerebral infarction is a major cause of disability and death.
- Understanding the underlying arterial lesions is key to stroke prevention and treatment.
- Previous studies have categorized stroke types but require detailed pathological analysis.
Purpose of the Study:
- To review arterial lesions associated with major stroke subtypes: atherothrombotic, cardioembolic, and lacunar strokes.
- To analyze the specific arterial pathologies responsible for striatocapsular infarction.
- To emphasize the necessity of postmortem examinations in acute stroke cases for elucidating disease mechanisms.
Main Methods:
- Review of pathological materials from the National Cardiovascular Center.
- Analysis of arterial lesions in patients with acute cerebral infarction.
- Separate examination of arterial lesions in striatocapsular infarction.
Main Results:
- Atherothrombotic stroke results from reduced arterial perfusion or embolism.
- Cardioembolic stroke encompasses cerebral infarction linked to non-bacterial thrombotic endocarditis.
- Striatocapsular infarction is attributed to middle cerebral artery embolism and internal carotid artery/middle cerebral artery abnormalities.
- Lacunar stroke mechanisms remain under-studied due to the complexity of arterial lesion analysis.
Conclusions:
- Postmortem examination of stroke patients, particularly those with acute onset, is essential for a comprehensive understanding of cerebral infarction.
- Further research into the arterial lesions causing lacunar stroke is warranted.
- Accurate pathological assessment of arterial lesions is critical for advancing stroke research and clinical management.
Abstract:
The arterial lesions underlying cerebral infarction were reviewed by studying the pathological materials in the National Cardiovascular Center. The major clinical categories of arterial lesion (i.e. atherothrombotic, cardio-embolic and lacunar strokes) were reviewed. Arterial lesions underlying striatocapsular infarction were reviewed separately. In order to analyze the mechanisms of the development of cerebral infarction, full postmortem ex-amination of patients dying shortly after the onset of stroke is necessary. Therefore, arterial lesions observed in acute stroke patients were the topic of this review. Two mechanisms are responsible for atherothrombotic stroke: reduced perfusion due to obstructive changes in the arteries and embolism. Cardioembolic stroke includes a special clinicopathological entity, cerebral infarction associated with non-bacterial thrombotic endocarditis. The mechanisms of development of lacunar stroke are not studied sufficiently because the analysis of arterial lesions responsible for lacunes requires meticulous effort to examine serial sections of specially prepared specimens. Embolism of the middle cerebral artery (MCA) and abnormalities of the internal carotid artery (ICA) and MCA are responsible for striatocapsular infarction. The author emphasizes the need for postmortem examination of stroke patients, especially those dying shortly after the onset of stroke.
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