Related Experiment Video
Updated: Aug 3, 2026

Mouse Models of Periventricular Leukomalacia
Published on: May 18, 2010
Bilateral white matter lesions following severe meningococcal meningoencephalitis
A Müller-Jensen1, R Harvarik, J Valk
1Department of Neurology, General Hospital Altona, Hamburg, Germany.
Abstract:
Occasionally, striking abnormalities are found on MRI in patients with mild neurological disturbances. In most of these cases the diagnosis is not immediately evident and the history does not provide an unequivocal explantation. We present a patient with extensive symmetrical white matter abnormalities in the posterior temporal, temporo-occipital and parietal regions, 24 years after documented severe meningococcal meningoencephalitis. A meningitic vasculitis, affecting the insular branches of the middle cerebral arteries, could have been responsible for these changes.
Insights
Severe meningococcal meningoencephalitis can lead to extensive white matter abnormalities years later. This case highlights potential long-term neurological consequences of meningitic vasculitis.
Area of Science:
- Neurology
- Neuroradiology
- Infectious Diseases
Background:
- Neurological deficits can sometimes be disproportionate to clinical presentation.
- Diagnosing the cause of neurological abnormalities requires thorough investigation, including advanced imaging and patient history.
Observation:
- A patient presented with extensive, symmetrical white matter abnormalities in the posterior temporal, temporo-occipital, and parietal regions.
- These MRI findings were observed 24 years after a documented severe meningococcal meningoencephalitis.
Findings:
- The observed white matter abnormalities suggest a potential link to the prior meningococcal infection.
- Meningitic vasculitis affecting the insular branches of the middle cerebral arteries is hypothesized as the underlying cause.
Implications:
- This case underscores the possibility of delayed neurological sequelae following severe meningitis.
- Understanding such long-term effects is crucial for comprehensive patient management and prognosis.
- Further research into the chronic vascular complications of meningococcal meningoencephalitis is warranted.
Related Concept Videos
Bacterial Meningitis
Viral Meningitis
Cryptococcal Meningitis
Bacterial Meningitis I: Introduction
Bacterial Meningitis II: Pathophysiology
Encephalitis l: Introduction

