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Published on: July 1, 2020
Systemic fungal infections in patients with human inmunodeficiency virus
C Rodríguez-Cerdeira1, R Arenas2, G Moreno-Coutiño2
1Servicio de Dermatología, CHUVI y Universidad de Vigo, Vigo, España.
Abstract:
Histoplasmosis is a systemic infection caused by the dimorphic fungus Histoplasma capsulatum. In immunocompromised patients, primary pulmonary infection can spread to the skin and meninges. Clinical manifestations appear in patients with a CD4(+) lymphocyte count of less than 150 cells/μL. Coccidioidomycosis is a systemic mycosis caused by Coccidioides immitis and Coccidioides posadasii. It can present as diffuse pulmonary disease or as a disseminated form primarily affecting the central nervous system, the bones, and the skin. Cryptococcosis is caused by Cryptococcus neoformans (var. neoformans and var. grubii) and Cryptococcus gattii, which are members of the Cryptococcus species complex and have 5 serotypes: A, B, C, D, and AD. It is a common opportunistic infection in patients with human immunodeficiency virus (HIV)/AIDS, even those receiving antiretroviral therapy. Histopathologic examination and culture of samples from any suspicious lesions are essential for the correct diagnosis of systemic fungal infections in patients with HIV/AIDS.
Insights
Systemic fungal infections like histoplasmosis, coccidioidomycosis, and cryptococcosis pose risks to immunocompromised patients, especially those with HIV/AIDS. Early diagnosis via histopathologic examination and culture of lesions is crucial for effective treatment.
Area of Science:
- Mycology
- Infectious Diseases
- Immunocompromised Host
Background:
- Histoplasmosis, coccidioidomycosis, and cryptococcosis are systemic mycoses caused by specific fungi.
- These infections commonly affect immunocompromised individuals, particularly those with advanced HIV/AIDS.
- Dissemination can affect various organs, including the skin, meninges, central nervous system, and bones.
Purpose of the Study:
- To review the clinical manifestations and diagnostic approaches for systemic fungal infections in immunocompromised patients.
- To highlight the importance of early diagnosis in managing disseminated fungal diseases.
Main Methods:
- Review of literature on histoplasmosis, coccidioidomycosis, and cryptococcosis in immunocompromised hosts.
- Discussion of clinical presentations and diagnostic methods.
Main Results:
- Systemic fungal infections present with diverse clinical manifestations depending on the causative agent and host immune status.
- Low CD4(+) lymphocyte counts (<150 cells/μL) are associated with increased risk and severity.
- Histopathologic examination and culture are essential for definitive diagnosis.
Conclusions:
- Prompt diagnosis and management are critical for improving outcomes in patients with systemic fungal infections.
- Awareness of these infections is vital for clinicians managing immunocompromised populations, including those with HIV/AIDS.
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