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Visualizing Impairment of the Endothelial and Glial Barriers of the Neurovascular Unit during Experimental Autoimmune Encephalomyelitis In Vivo
Published on: March 26, 2019
Childhood central nervous system vasculitis
Susanne Benseler1, Daniela Pohl
1Division of Rheumatology, Department of Pediatrics, University of Toronto and Child Health Evaluative Sciences, Research Institute, Hospital for Sick Children, Toronto, Canada.
Insights
Childhood primary angiitis of the CNS (cPACNS) is a serious condition requiring prompt diagnosis. Early recognition and treatment of this rare neurological disorder significantly improve patient outcomes.
Area of Science:
- Pediatric Neurology
- Neuroimmunology
- Vascular Neurology
Background:
- Childhood CNS vasculitis is a rare neurological disorder.
- It can be primary (cPACNS) or secondary to systemic diseases.
- Early diagnosis and treatment are crucial for better outcomes.
Purpose of the Study:
- To highlight the diagnostic challenges and key modalities for childhood CNS vasculitis.
- To emphasize the importance of timely intervention in cPACNS.
- To provide a comprehensive overview of diagnostic evaluation.
Main Methods:
- Review of clinical presentation, diagnostic imaging (MRI, angiography), and biopsy.
- Discussion of laboratory markers and CSF analysis.
- Consideration of secondary causes and mimics of CNS vasculitis.
Main Results:
- Clinical presentation is highly variable, including neurological and psychiatric symptoms.
- MRI is sensitive but not specific; angiography is key for large/medium vessel cPACNS.
- Brain biopsy is necessary for small vessel cPACNS with normal angiography.
Conclusions:
- Timely diagnosis of cPACNS is essential due to variable presentation and diagnostic limitations.
- A thorough evaluation including imaging, biopsy, and exclusion of mimics is required.
- Early recognition and treatment can significantly alter the course of this devastating disease.
Abstract:
Childhood CNS vasculitis is a newly recognized disease entity, which can occur in isolation as a primary disorder - childhood primary angiitis of the CNS (cPACNS)-or secondary to systemic diseases. Since early initiation of treatment is associated with improved disease outcome, rapid evaluation and timely diagnosis are essential. The clinical presentation can be highly variable. Children present with newly acquired focal and/or diffuse neurological deficits and/or psychiatric symptoms. Inflammatory markers and CSF analysis are essential, but show limited sensitivity and specificity. MRI studies are highly sensitive for areas of focal inflammation, however lack specificity. Negative MRI studies do not exclude inflammatory brain disease. Angiography is the key diagnostic modality for large to medium vessel cPACNS. Characteristic angiographic findings include segmental cerebral vessel stenoses and corresponding contrast enhancement in the vessel wall. In children with normal angiography, confirmation of small vessel cPACNS requires brain biopsy. A thorough diagnostic evaluation for cPACNS should include a workup for causes of secondary CNS vasculitis, evaluation for CNS vasculitis mimics, and analysis of markers of nonvasculitic inflammatory brain diseases when appropriate. Early recognition with timely treatment of childhood CNS vasculitis can significantly alter the course of this potentially devastating disease.
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