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Acute meningitis caused by Cladosporium sphaerospermum
Chi-Yu Chen1, Po-Liang Lu, Kun-Mu Lee
1Division of Infectious Diseases (C-YC, P-LL, C-CL, KC, W-RL, C-YL, Y-HC), Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Internal Medicine (C-YC, KC), Kaohsiung Municipal Hsiao-Kang Hospital, Kaohsiung, Taiwan; Division of Clinical Microbiology (P-LL, K-ML), Department of Laboratory Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan; School of Medicine (P-LL, Y-HC), College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Medical Laboratory Science and Biotechnology (CC), College of Medicine, National Cheng Kung University, Tainan, Taiwan; and Graduate Institute of Medicine (C-YL, Y-HC), College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
Abstract:
Phaeohyphomycosis of the central nervous system is rare but typically associated with high mortality. Treatment has not been standardized, but the combination of antifungal chemotherapy with surgical debridement is recommended. We report a 73-year-old, retired, male timber merchant with acute meningitis caused by Cladosporium sphaerospermum. The patient, who had well-controlled type 2 diabetes mellitus, presented with fever and weakness of the lower limbs. No brain abscess was apparent by cranial computed tomography. C. sphaerospermum was isolated from the cerebral spinal fluid and identified based on both morphology and DNA sequencing. He was treated with combination antifungal chemotherapy with amphotericin B and voriconazole for 28 days, followed by voriconazole monotherapy for 46 days. To date, the patient has recovered without significant sequelae. This patient represents the first reported case of cerebral phaeohyphomycosis caused by C. sphaerospermum. Moreover, the therapy was successful for totally less than 3 months of treatment duration.
Insights
Central nervous system phaeohyphomycosis is rare and deadly. This case study details a successful treatment of meningitis caused by Cladosporium sphaerospermum using antifungal chemotherapy, offering hope for rare fungal infections.
Area of Science:
- Mycology
- Infectious Diseases
- Neurology
Background:
- Phaeohyphomycosis of the central nervous system (CNS) is a rare fungal infection with a high mortality rate.
- Standardized treatment protocols are lacking, though combined antifungal chemotherapy and surgical intervention are often recommended.
- Cladosporium species are known opportunistic pathogens, but CNS involvement is exceptionally uncommon.
Observation:
- A 73-year-old male with well-controlled type 2 diabetes mellitus presented with acute meningitis symptoms, including fever and lower limb weakness.
- Cranial computed tomography did not reveal any brain abscess.
- Cerebrospinal fluid analysis led to the isolation and identification of Cladosporium sphaerospermum via morphology and DNA sequencing.
Findings:
- This case represents the first documented instance of cerebral phaeohyphomycosis caused by Cladosporium sphaerospermum.
- The patient received a 28-day course of combination antifungal therapy with amphotericin B and voriconazole, followed by 46 days of voriconazole monotherapy.
- Complete recovery was achieved without significant long-term sequelae.
Implications:
- Successful treatment of CNS phaeohyphomycosis caused by C. sphaerospermum with a less than three-month antifungal regimen is demonstrated.
- This case highlights the potential efficacy of targeted antifungal chemotherapy in managing rare CNS fungal infections.
- Early diagnosis and prompt treatment are crucial for improving outcomes in patients with CNS phaeohyphomycosis.
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