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Related Experiment Video

Updated: Jun 27, 2026

Circumscribed Capsular Infarct Modeling Using a Photothrombotic Technique

Circumscribed Capsular Infarct Modeling Using a Photothrombotic Technique

Published on: June 2, 2016

Microscopic polyangiitis presenting with capsular warning syndrome and subsequent stroke.

C W Tang¹, P N Wang, K P Lin

¹Neurological Institute, Taipei Veterans General Hospital, National Yang-Ming University School of Medicine, Taipei, Taiwan.

Journal of the Neurological Sciences

|November 27, 2008

Summary

A patient experienced ischemic stroke due to microscopic polyangiitis, a rare autoimmune condition. Early diagnosis through specific antibodies and skin biopsy is crucial for managing this severe neurological event.

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Published on: September 19, 2019

Area of Science:

Neurology
Rheumatology
Immunology

Background:

Capsular warning syndrome presents as transient neurological deficits preceding a major stroke.
Microscopic polyangiitis is a systemic vasculitis affecting small blood vessels.

Observation:

A 55-year-old man presented with recurrent transient dysarthria and left hemiplegia.
Brain MRI revealed bilateral basal ganglionic infarction, indicative of ischemic stroke.
The patient lacked typical stroke risk factors.

Findings:

Elevated perinuclear anti-neutrophilic cytoplasmic antibody (p-ANCA) titers were detected.
Skin biopsy confirmed leukocytoclastic venulitis, a hallmark of small-vessel vasculitis.
These findings confirmed microscopic polyangiitis as the underlying cause of stroke.

Implications:

This case highlights the importance of considering systemic vasculitis in cryptogenic strokes.
Prompt identification and treatment of microscopic polyangiitis can prevent further neurological damage.
Integrated neurological and rheumatological management is essential for patients with vasculitis-associated stroke.