[Sporadic cerebral amyloid angiopathy]

Area of Science:

• Neurology
• Vascular Biology
• Geriatrics

Background:

• Cerebral amyloid angiopathy (CAA) is a significant small vessel disease characterized by amyloid-beta peptide deposition in cerebral and leptomeningeal vessels.
• Advancing age is the primary risk factor, with CAA frequently affecting the elderly population.
• It is a leading cause of lobar intracerebral hemorrhage, cognitive decline, and transient neurological episodes.

Purpose of the Study:

• To summarize the current understanding of sporadic cerebral amyloid angiopathy (CAA).
• To highlight diagnostic criteria and neuroimaging findings.
• To outline current management strategies and the lack of specific treatments.

Main Methods:

• Review of clinical and neuroimaging findings associated with CAA.
• Application of modified Boston criteria for diagnosis in the absence of direct neuropathological examination.
• Analysis of current management guidelines, including blood pressure control and considerations for anticoagulation and antiplatelet agents.

Main Results:

• Typical MRI findings include lobar intracerebral hemorrhages, microbleeds, superficial siderosis, white matter hyperintensities, dilated perivascular spaces, and microinfarcts.
• The modified Boston criteria, based on clinical and MRI data, are the most common diagnostic approach.
• No specific treatments are currently available to prevent bleeding or cognitive decline.

Conclusions:

• Sporadic CAA is a prevalent neurodegenerative disease in the elderly, associated with significant neurological morbidity.
• Accurate diagnosis relies on clinical assessment and characteristic MRI findings.
• Management remains focused on supportive care, primarily strict blood pressure control, with careful consideration of antithrombotic therapies.