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Published on: September 9, 2015
[Exophiala species--a rare cause of endocarditis with cerebral abscess formation]
T Heveling1, G Schwarzkopf-Steinhauser, J Planck
1Abteilung für Neurologie, Krankenhaus München-Harlaching, Städt. Klinikum GmbH, München. T.Heveling@gmx.de
Abstract:
Exophiala species belong to the dematiaceous fungi. Occurring worldwide, they are a rare cause of human infection. We present the case of a 75-year-old immunocompetent patient with a cardiogenic embolic anterior cerebral artery infarction. Echocardiography revealed endocarditis of the aortic valve. Antibiotic therapy was initiated after susceptibility testing (blood cultures were positive for Staphylococcus aureus, and liquor was normal), with a subsequent fall in serologic markers of infection and resolution of the signs of endocarditis on echocardiography. However, 6 weeks after initiation of antibiotic therapy, abscesses were seen in the infarct region on CT scan, although antimicrobial treatment was still continued. At this stage, the CSF showed an inflammatory process, and Exophiala species, susceptible to voriconazol, could be detected in liquor cultures. However, antifungal therapy with voriconazol could not prevent severe sepsis and death from multiorgan failure. Autopsy revealed the clinically supposed Exophiala endocarditis with metastatic cerebral abscesses. In accordance with other published case reports, a fatal outcome in disseminated Exophiala infection might only be prevented by aggressive therapy consisting of early surgical removal of the foci and combined antifungal agents.
Insights
Disseminated Exophiala fungal infection, though rare, can be fatal. Early surgical intervention combined with antifungal agents is crucial for preventing severe outcomes in such cases.
Area of Science:
- Medical Mycology
- Infectious Diseases
Background:
- Exophiala species are dematiaceous fungi rarely causing human infections.
- This case involves a 75-year-old immunocompetent patient with aortic valve endocarditis and cerebral infarction.
Observation:
- Initial antibiotic therapy for Staphylococcus aureus resolved endocarditis but did not prevent subsequent cerebral abscesses.
- Cerebrospinal fluid analysis revealed inflammation and Exophiala species, a rare fungal pathogen.
Findings:
- Despite voriconazole treatment, the patient developed severe sepsis and multiorgan failure due to disseminated Exophiala infection.
- Autopsy confirmed Exophiala endocarditis with metastatic cerebral abscesses.
Implications:
- Aggressive treatment, including early surgical removal of infected foci and combination antifungal therapy, is essential for managing disseminated Exophiala infections.
- This case highlights the challenges in treating rare fungal infections and emphasizes the need for prompt, multifaceted therapeutic approaches.
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