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Abstract:
A patient with chronic granulocytic leukemia developed overwhelming histoplasmosis. During massive fungemia, 59% of peripheral blood neutrophils contained yeast forms. Disseminated intravascular coagulation occurred. Histoplasma capsulatum was isolated not only from the patient's tissues and urine, but also from a serum sample submitted to a reference laboratory for serological testing. The microorganism was demonstrated by specific immunofluorescent staining of peripheral blood films. We suggest that histoplasmosis deserves a definite place on the roster of "opportunistic fungi".
Insights
This study details a chronic granulocytic leukemia patient with severe histoplasmosis and fungemia. The fungus Histoplasma capsulatum was found in blood, tissues, and urine, highlighting its opportunistic nature.
Area of Science:
- Mycology
- Hematology
- Infectious Diseases
Background:
- Chronic granulocytic leukemia (CGL) is a myeloproliferative neoplasm.
- Histoplasmosis is a systemic fungal infection caused by Histoplasma capsulatum.
- Opportunistic infections pose significant risks in immunocompromised patients.
Observation:
- A patient with CGL presented with overwhelming histoplasmosis and massive fungemia.
- Yeast forms of Histoplasma capsulatum were identified within 59% of peripheral blood neutrophils.
- Disseminated intravascular coagulation (DIC) was observed concurrently with the fungal infection.
Findings:
- Histoplasma capsulatum was successfully isolated from the patient's tissues, urine, and serum.
- Specific immunofluorescent staining confirmed the presence of the microorganism in peripheral blood films.
- The findings indicate a severe, disseminated fungal infection in an immunocompromised host.
Implications:
- Histoplasmosis should be recognized as a significant opportunistic infection in patients with hematologic malignancies.
- Early diagnosis and management of histoplasmosis are crucial in immunocompromised individuals.
- This case underscores the importance of considering fungal infections in the differential diagnosis of febrile illnesses in CGL patients.