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Scedosporium apiospermum brain abscess treated with surgery and voriconazole. Case report
Aabir Chakraborty1, Maria Rella Workman, Peter R Bullock
1Department of Neurosurgery, Kings College Hospital, Denmark Hill, London, United Kingdom. aabric@yahoo.com
Abstract:
Scedosporium apiospermum is a fungus found in the soil and in contaminated water. Common cutaneous manifestations include Madura foot, a painless swelling on the sole of the foot. Invasive infection is usually associated with immunosuppression. The authors present a 16-month-old immunocompetent boy who had a near-drowning event. Following this, he was severely disabled with spastic quadriparesis. Early computerized tomography scans revealed diffuse hypoxic injury. Magnetic resonance images obtained 3 months after the initial event demonstrated multiple ring-enhancing lesions in the brain. Aspiration of the lesion was performed. Scedosporium apiospermum, the asexual form of Pseudallescheria boydii, was cultured. Conventional antifungal agents were commenced, with minimal effect. The child was subsequently treated with a new antifungal agent, voriconazole, a broad-spectrum triazole antifungal agent with good penetration into the cerebrospinal fluid. The patient improved, with a good radiological outcome and a moderate clinical outcome. The authors review the use of voriconazole for central nervous system infections and review the literature on S. apiospermum associated with near drowning.
Insights
A rare Scedosporium apiospermum brain infection occurred in an immunocompetent child after near-drowning. Voriconazole treatment showed significant improvement, highlighting its efficacy for central nervous system fungal infections.
Area of Science:
- Mycology
- Infectious Diseases
- Neurology
Background:
- Scedosporium apiospermum, a fungus ubiquitous in soil and water, typically causes cutaneous infections but can lead to invasive disease, particularly in immunocompromised individuals.
- Invasive Scedosporium infections, especially central nervous system (CNS) involvement, are rare and challenging to treat.
- Near-drowning events can serve as a potential route for fungal pathogen entry into the CNS.
Observation:
- A 16-month-old immunocompetent boy developed severe neurological deficits, including spastic quadriparesis, following a near-drowning incident.
- Neuroimaging revealed diffuse hypoxic injury and multiple ring-enhancing brain lesions.
- Fungal culture from a brain lesion aspirate identified Scedosporium apiospermum.
Findings:
- Conventional antifungal therapies provided minimal benefit for the Scedosporium apiospermum CNS infection.
- Treatment with voriconazole, a broad-spectrum triazole with good cerebrospinal fluid penetration, led to clinical improvement and favorable radiological outcomes.
- The patient experienced moderate clinical recovery and good radiological resolution of brain lesions.
Implications:
- This case underscores the potential for Scedosporium apiospermum to cause invasive CNS infections in immunocompetent individuals after near-drowning.
- Voriconazole demonstrates significant therapeutic potential for treating Scedosporium apiospermum central nervous system infections.
- Further research into the management of rare fungal CNS infections post-near-drowning is warranted.
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