Cerebral angiography in vasculitis affecting the nervous system.

Area of Science:

• Neurology
• Radiology
• Vascular Medicine

Background:

• Vasculitis can affect cerebral vessels, leading to diverse neurological symptoms.
• Cerebral angiography is a key imaging modality for evaluating cerebrovascular diseases.
• Differentiating inflammatory vasculitis from other pathologies is clinically significant.

Purpose of the Study:

• To assess the diagnostic yield of cerebral angiography in patients with suspected vasculitis.
• To determine the frequency of various cerebrovascular pathologies identified via angiography.
• To evaluate the role of angiography in diagnosing vasculitis versus other conditions.

Main Methods:

• Retrospective review of 199 patients with clinical evidence of vasculitis.
• Analysis of 42 cerebral angiograms performed on these patients.
• Categorization of angiographic findings, including vasculitis patterns, Moya-Moya collaterals, and fibromuscular dysplasia.

Main Results:

• Of 42 angiograms, 35 were abnormal, but only 21 showed patterns characteristic of vasculitis.
• Non-vasculitic causes (neoplasm, neurofibromatosis, drug use) accounted for some vasculitis-like patterns.
• Fibromuscular dysplasia and Moya-Moya disease were frequently identified, often incidentally or due to non-inflammatory causes.

Conclusions:

• Cerebral angiography is essential for diagnosing specific conditions like mycotic aneurysms, Moya-Moya disease, and fibromuscular dysplasia.
• Its role in diagnosing general vasculitis is limited, with many abnormalities stemming from non-inflammatory pathologies.
• Angiography plays a restricted role in identifying inflammatory vasculitis in routine clinical practice, especially in pediatric ischemic stroke cases.