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Brain Abscess Caused by Lactococcus Lactis in a Young Male
Intisar Ahmed1, Kashif Aziz2, Hameed Tareen3
1Department of Medicine, Section of Cardiology, The Aga Khan University, Karachi, Pakistan.
Summary
This case report details a rare brain abscess in an adolescent caused by Lactococcus lactis, a bacterium not typically associated with human infections. The patient recovered fully after surgical drainage and antibiotic treatment.
Area of Science:
- Neurology
- Infectious Diseases
- Microbiology
Background:
- Lactococcus lactis, a gram-positive coccus, is generally considered non-pathogenic.
- Brain abscesses are serious intracranial infections requiring prompt diagnosis and treatment.
Observation:
- An 18-year-old male with complex congenital heart disease presented with symptoms suggestive of a brain abscess.
- Neuroimaging revealed a left temporo-parietal lesion consistent with an abscess, exhibiting restricted diffusion and peripheral enhancement.
- Pus culture from the drained abscess confirmed the presence of Lactococcus lactis.
Findings:
- Lactococcus lactis was identified as the causative agent of a brain abscess in an adolescent patient.
- The patient had underlying congenital heart disease, a potential predisposing factor for such infections.
- Successful treatment involved surgical drainage and ceftriaxone therapy, leading to a complete recovery.
Implications:
- This case expands the spectrum of known pathogens capable of causing brain abscesses.
- It highlights the importance of considering unusual microorganisms in the etiology of central nervous system infections, especially in immunocompromised or medically complex patients.
- Further research may be warranted to understand the pathogenic mechanisms of Lactococcus lactis in invasive infections.
