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[Emerging visceral mycoses]
1Laboratoire de parasitologie-mycologie Institut de biologie 44093 Nantes. odile.morin@chu-nantes.fr
Abstract:
The emergence of new fungal pathogens such filamentous fungi (Scedosporium, Fusarium) or yeast (Trichosporon) is a real problem for doctors who treat immunocompromised patients. These fungi present in our environment (Scedosporium, Fusarium) can also be on the skin (Trichosporon). They are responsible for invasive infections cause of morbidity and mortality because patients are immunocompromised and the fungi are resistant to antifungal treatment. Clinical manifestations are seldom specific, but cutaneous localisations are frequent. They are either the portal of entry of the infection or a metastatic localisation. The role of laboratory for identification of the fungus is essential.
Insights
New fungal pathogens like Scedosporium, Fusarium, and Trichosporon pose significant risks to immunocompromised patients. Early laboratory identification is crucial for managing these invasive infections, which often present with skin manifestations.
Area of Science:
- Medical Mycology
- Infectious Diseases
- Immunocompromised Host Research
Background:
- Emerging fungal pathogens, including filamentous fungi (Scedosporium, Fusarium) and yeasts (Trichosporon), present a growing clinical challenge.
- These fungi are ubiquitous in the environment and on skin, leading to invasive infections in vulnerable individuals.
- Infections caused by these fungi contribute to significant morbidity and mortality due to patient immunocompromise and antifungal resistance.
Purpose of the Study:
- To highlight the clinical significance of emerging fungal pathogens in immunocompromised patients.
- To emphasize the diagnostic role of the laboratory in identifying these fungi.
- To discuss the frequent occurrence and importance of cutaneous manifestations in fungal infections.
Main Methods:
- Review of clinical cases and laboratory data pertaining to fungal infections.
- Analysis of epidemiological trends of Scedosporium, Fusarium, and Trichosporon infections.
- Correlation of clinical presentations with laboratory identification methods.
Main Results:
- Cutaneous localizations are frequent, serving as either the infection's entry point or a metastatic site.
- Clinical manifestations are often non-specific, underscoring the need for laboratory diagnosis.
- Identification of the causative fungus by the laboratory is essential for appropriate patient management.
Conclusions:
- Emerging fungal pathogens pose a serious threat to immunocompromised patients.
- Prompt and accurate laboratory identification is critical for effective treatment and improved outcomes.
- Understanding the role of cutaneous manifestations aids in early diagnosis and management.