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Listeria monocytogenes Infection of the Brain

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Subdural empyema due to Lactococcus lactis cremoris: case report.

Mizuho Inoue¹, Atsushi Saito, Hiroyuki Kon

¹Department of Neurosurgery, Aomori Prefectural Central Hospital.

Neurologia Medico-Chirurgica

|November 22, 2013

Summary

This case report details a rare subdural empyema in an immunocompetent adult caused by Lactococcus lactis cremoris (L. lactis cremoris) infection. It highlights the unusual presentation and successful treatment of this rare bacterial brain infection.

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Area of Science:

Neurology
Infectious Diseases
Bacteriology

Background:

Lactococcus lactis cremoris (L. lactis cremoris) infections are exceptionally rare in humans, with limited documented cases, primarily brain abscesses.
The infectious routes and pathological characteristics of L. lactis cremoris remain largely unknown.
Subdural empyema is a serious intracranial infection that requires prompt diagnosis and treatment.

Observation:

A 33-year-old immunocompetent male presented with fever, facial pain, and neurological deficits including hemiparesis and hemianopsia.
Imaging revealed a subdural empyema in the right falcotentorial space, along with sinusitis affecting the maxillary and ethmoidal sinuses.
The patient underwent surgical drainage and received antibiotic treatment with meropenem and ampicillin.

Findings:

This is the first reported case of subdural empyema caused by L. lactis cremoris.
The findings suggest L. lactis cremoris can cause severe intracranial infections beyond brain abscesses.
The case provides insights into the potential pathological features and clinical presentation of this rare infection.

Implications:

This case expands the known spectrum of L. lactis cremoris infections in humans.
It underscores the importance of considering rare pathogens in the differential diagnosis of intracranial infections.
Further research is needed to understand the pathogenesis and optimal management of L. lactis cremoris infections.