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Chapter 11 - Cerebral microbleeds in relation to hypertensivearteriopathy

from Section 3 - Microbleeds in relation to specific populations, diseases and neurological symptoms

Published online by Cambridge University Press:  05 July 2011

David J. Werring
Affiliation:
Institute of Neurology, London
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Summary

This chapter reviews the pathophsyiology and pathology of hypertensive arteriopathy of the brain and its relationship to neuroimaging findings, particularly cerebral microbleeds (CMBs). The prevalence of hypertension is highly age dependent. Hypertension-related cerebral diseases include hypertensive encephalopathy, stroke and vascular cognitive impairment. Although the term arteriopathy includes both arteries and arterioles, the chapter focuses on the intrinsic vascular pathology of arterioles in hypertension. Intracranial atherosclerosis of large arteries is more common in hypertension. The presence of hypertensive arteriolosclerosis must be inferred indirectly. Hypertension is a common age-related disease that is accompanied by loss of vascular integrity, with leakage of red blood cells and perivascular hemosiderin deposition. Cerebral microbleeds caused by hypertensive arteriopathy may be seen in the deep hemispheric regions, brainstem, cerebellum and cerebral lobes; however, the pattern of purely lobar CMBs strongly suggests cerebral amyloid angiopathy (CAA) rather than hypertensive arteriopathy.
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Cerebral Microbleeds
Pathophysiology to Clinical Practice
, pp. 99 - 108
Publisher: Cambridge University Press
Print publication year: 2011

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