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Updated: May 19, 2026

Listeria monocytogenes Infection of the Brain
Published on: October 2, 2018
An unusual form of listerial CNS infection
Cara L Sedney1, Todd Harshbarger, Kymberly Gyure
1West Virginia University, Department of Neurosurgery, USA.
Abstract:
Listeria monocytogenes is a known cause of meningitis, but cerebral abscess formation is exceedingly rare. We describe a patient who presented with an unsteady gait and a small ring-enhancing lesion in the right parietal lobe. Pathologic evaluation demonstrated an abscess with associated microglial nodules, and culture revealed Listeria. In spite of the rarity of this entity, immunosuppression has been noted to be a predisposing factor. Our patient had diabetes mellitus and chronic obstructive pulmonary disease with recent prednisone administration, both very common ailments in the population of West Virginia.
Insights
Listeria monocytogenes rarely causes brain abscesses, but this case highlights the risk in immunocompromised individuals. The study details a patient with common comorbidities who developed a rare Listeria brain abscess.
Area of Science:
- Neurology
- Infectious Diseases
- Pathology
Background:
- Listeria monocytogenes is a recognized cause of meningitis.
- Cerebral abscess formation due to Listeria monocytogenes is exceptionally rare.
Observation:
- A patient presented with an unsteady gait and a right parietal lobe ring-enhancing lesion.
- Pathological examination revealed a cerebral abscess with microglial nodules.
- Cultures confirmed the presence of Listeria.
Findings:
- The patient had common comorbidities: diabetes mellitus and chronic obstructive pulmonary disease.
- Recent prednisone administration was noted, indicating iatrogenic immunosuppression.
Implications:
- This case underscores the importance of considering Listeria monocytogenes in brain abscesses, particularly in immunocompromised patients.
- Common conditions like diabetes and COPD, especially with corticosteroid use, can predispose individuals to rare infections.
- Highlights a rare but serious neurological complication of Listeria infection.
Related Concept Videos
Bacterial Meningitis I: Introduction
Encephalitis l: Introduction
Viral Meningitis
Brain Abscess l: Introduction
Encephalitis ll: Pathophysiology
Bacterial Phylum Spirochaetes

