Primary central nervous system vasculitis: pathology and mechanisms

Area of Science:

• Neurology
• Immunology
• Pathology

Background:

• Primary vasculitis of the central nervous system (PCNSV) is a rare and challenging diagnosis.
• It presents with diverse clinical and pathological features, suggesting multiple subtypes and etiologies.
• Pathogenesis and immunological mechanisms of PCNSV remain poorly understood compared to systemic vasculitis.

Purpose of the Study:

• To detail the clinical, imaging, and neuropathological findings of PCNSV.
• To summarize existing literature and present observations from a large patient cohort.
• To highlight the need for further characterization to understand disease mechanisms.

Main Methods:

• Review of literature data on PCNSV.
• Analysis of a cohort of 131 PCNSV patients diagnosed at Mayo Clinic from 1983-2007.
• Detailed description of clinical, imaging, and neuropathological findings.

Main Results:

• PCNSV exhibits multifaceted clinical and pathological appearances.
• The study cohort provided extensive data on patient findings over 25 years.
• Significant gaps in knowledge regarding PCNSV pathogenesis and immunology were identified.

Conclusions:

• Understanding the full spectrum and detailed phenotype of PCNSV is critical.
• Further characterization is needed to elucidate underlying mechanisms.
• This knowledge may lead to novel diagnostic and therapeutic strategies for PCNSV.