Related Experiment Video
Updated: Jun 19, 2026

Comprehensive Autopsy Program for Individuals with Multiple Sclerosis
Published on: July 19, 2019
MRI and pathological findings of rheumatoid meningitis
Masaaki Matsushima1, Hiroaki Yaguchi, Masaaki Niino
1Department of Neurology, Hokkaido University Graduate School of Medicine, Kita-15, Nishi-7, Kita-ku, Sapporo 060-8638, Japan.
Abstract:
Rheumatoid meningitis (RM) is one of the most severe complications of rheumatoid arthritis. The mortality rate of RM is relatively high and diagnosis can be difficult. We present an 80-year-old woman who was diagnosed with microscopic findings of RM after analysis of biopsy specimens taken from a brain lesion. MRI scanning revealed meningeal enhancement in the brain, and the pathological findings were those of meningeal lymphocytic infiltration, vasculitis and rheumatoid nodules. RM is a treatable disease and in this patient RM was diagnosed on the basis of biopsy findings.
Insights
Rheumatoid meningitis (RM), a severe rheumatoid arthritis complication, is difficult to diagnose. This case highlights biopsy confirmation of RM in an elderly woman with brain lesions.
Area of Science:
- Neurology
- Rheumatology
- Pathology
Background:
- Rheumatoid meningitis (RM) is a rare but severe neurological complication of rheumatoid arthritis.
- Early diagnosis and treatment are crucial due to RM's high mortality rate.
Observation:
- An 80-year-old woman presented with a brain lesion.
- MRI revealed meningeal enhancement, suggesting central nervous system involvement.
Findings:
- Biopsy analysis of the brain lesion confirmed microscopic findings of RM.
- Pathological examination showed meningeal lymphocytic infiltration, vasculitis, and rheumatoid nodules.
Implications:
- This case underscores the importance of considering RM in rheumatoid arthritis patients with neurological symptoms.
- Biopsy confirmation is vital for accurate RM diagnosis and timely initiation of treatment.
- Prompt treatment of RM can improve patient outcomes and reduce mortality.
Related Concept Videos
Bacterial Meningitis I: Introduction
Bacterial Meningitis
Viral Meningitis
Bacterial Meningitis II: Pathophysiology
Magnetic Resonance Imaging
Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies
