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Invasive infection caused by Pseudallescheria boydii in an immunocompetent patient
E Bibashi1, G S de Hoog, E Kostopoulou
1Microbiology Department, Hippokration Hospital, Thessaloniki, Greece. bibashi@med.auth.gr
Abstract:
Pseudallescheria boydii is a saprophytic fungus frequently isolated from agricultural soil and polluted water. Disseminated and invasive infections with this organism are seen primarily in the immunocompromised host. We present an unusual case of invasive P. boydii infection in an immunocompetent patient admitted to our hospital with clinical, laboratory and ECG findings of a possible acute myocardiac infarction. Six hours after admission without treatment with thrombolytic agents she presented with a right hemiparesis and loss of consciousness; a CT scan showed a cerebral hemorrhage. She was treated with dexamethasone i.v. 32 mg per day. She was not incubated. Two blood cultures taken the 15th and 16th day of hospitalization, respectively, revealed a filamentous fungus which was identified by CBS as P. boydii. The pathologic examination of one nodule showed hyphae of fungi. Despite the administration of amphotericin B the patient died one week later.
Insights
An unusual case of invasive Pseudallescheria boydii infection occurred in an immunocompetent patient presenting with stroke-like symptoms. This highlights the fungus
Area of Science:
- Medical Mycology
- Infectious Diseases
- Neurology
Background:
- Pseudallescheria boydii is a fungus typically found in soil and water.
- Invasive infections usually affect immunocompromised individuals.
Observation:
- An immunocompetent patient presented with symptoms mimicking acute myocardial infarction, followed by cerebral hemorrhage.
- Blood cultures and pathological examination confirmed invasive P. boydii infection.
Findings:
- The patient received dexamethasone and later amphotericin B.
- Despite treatment, the patient succumbed to the infection.
Implications:
- This case underscores the potential for P. boydii to cause severe invasive disease in immunocompetent hosts.
- Highlights the importance of considering fungal infections in unexplained neurological events.
- Suggests a need for further research into P. boydii pathogenesis and treatment in diverse patient populations.
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