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Chronic Candida dubliniensis meningitis in a lung transplant recipient
Sabina Herrera1, Paolo Pavone1, Deepali Kumar1
1Immunocompromised Host Infectious Diseases Service, Division of Infectious Diseases, Department of Medicine, and the Multi-Organ Transplant Program, University Health Network, University of Toronto, Toronto, Ontario, Canada.
Abstract:
Candida spp. are common colonizers of the oral mucosa and respiratory tract in lung transplant recipients. Although thought to be non-pathogenic in most cases, donor derived infections related to Candida spp. have been described. Among the manifestations of invasive candidiasis, chronic meningitis is one of the rarest and one of the most challenging to diagnose, due to the indolence of the disease and the low yield of the CSF cultures. It is associated with severe morbidity and a high mortality. Fungal PCR and BD glucan assays can be assistance in its diagnosis, although these tests are not widely available. We report a case of a possible donor derived Candida dubliniensis infection in a lung transplant recipient, who initially presented with empyema that was treated successfully, but subsequently developed chronic meningitis. Diagnosis was delayed due to the low yield of CSF cultures, and was confirmed with fungal PCR and BD glucan assay.
Insights
Donor-derived Candida dubliniensis caused a rare chronic meningitis in a lung transplant recipient. Diagnosis was challenging due to low cerebrospinal fluid culture yield, highlighting the need for advanced fungal diagnostics.
Area of Science:
- Infectious Diseases
- Transplantation Medicine
- Mycology
Background:
- Candida species commonly colonize the oral and respiratory tracts of lung transplant recipients.
- While often non-pathogenic, donor-derived Candida infections can occur, posing risks.
- Chronic meningitis is a rare but severe manifestation of invasive candidiasis, difficult to diagnose.
Observation:
- A lung transplant recipient developed empyema, successfully treated, followed by chronic meningitis.
- The meningitis was suspected to be a possible donor-derived Candida dubliniensis infection.
- Cerebrospinal fluid cultures yielded low results, delaying diagnosis.
Findings:
- Diagnosis was confirmed using fungal PCR and Beta-D-glucan assay.
- These advanced diagnostic methods proved crucial for identifying the fungal meningitis.
- The case highlights a rare presentation of invasive candidiasis post-transplantation.
Implications:
- Early diagnosis of invasive fungal infections in transplant recipients is critical.
- Advanced diagnostics like fungal PCR and BD glucan assays are vital when cultures are negative.
- This case underscores the potential for rare, severe donor-derived infections in immunocompromised patients.
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