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Oral yeast infections in immunocompromised and seriously diseased patients
1Department of Oral Surgery, Huddinge University Hospital, Karolinska Institute, Sweden.
Abstract:
The number of immunocompromised patients has increased during recent years. Most fungal infections in these patients are caused by Candida, Aspergillus, Mucor, and Cryptococcus species. Patients with low granulocyte count are at the highest risk of invasive candidal infection. The commonest type of granulocytopenia is observed in connection with malignant diseases of the hematopoietic system. Cytotoxic treatment and radiotherapy of large-body areas tend to produce a significant decrease in circulating granulocytes. Early diagnosis and adequate treatment of fungal infections are mandatory for a successful outcome. In the oral cavity it is important to differentiate between colonization and invasive infection. The optimal approach to diagnosis is a combination of histology and cultivation of specimens obtained from the same site of suspected infection. Prophylaxis of oral fungal infection in immunocompromised patients is generally aimed at preventing colonization.
Insights
Immunocompromised patients face increased fungal infection risks, particularly from Candida species. Early diagnosis combining histology and cultivation is crucial for effective treatment and preventing oral fungal infections.
Area of Science:
- Medical Mycology
- Immunocompromised Host Infections
Background:
- Rising numbers of immunocompromised patients globally.
- Fungal infections, primarily by Candida, Aspergillus, Mucor, and Cryptococcus, pose significant threats.
- Patients with neutropenia, especially due to hematologic malignancies or cytotoxic therapies, are highly susceptible to invasive fungal infections.
Purpose of the Study:
- To highlight the increased risk of fungal infections in immunocompromised patients.
- To emphasize the importance of early and accurate diagnosis of fungal infections.
- To discuss diagnostic strategies for oral fungal infections in this population.
Main Methods:
- Review of common fungal pathogens in immunocompromised individuals.
- Discussion of risk factors, including granulocytopenia.
- Emphasis on differentiating colonization from invasive infection in the oral cavity.
Main Results:
- Candida species are the most common cause of fungal infections in immunocompromised patients.
- Low granulocyte counts, often resulting from cancer treatment, elevate the risk of invasive candidiasis.
- Histology combined with cultivation from the same site is the optimal diagnostic approach.
Conclusions:
- Prompt diagnosis and treatment are essential for managing fungal infections in immunocompromised patients.
- Preventing colonization is a key strategy for oral fungal infection prophylaxis.
- Accurate differentiation between oral fungal colonization and invasive infection is critical for appropriate patient management.