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[Progressive disseminated histoplasmosis in AIDS patients]
C M Fernández Andreu1, C C Varona, G Martínez Machín
1Instituto de Medicina Tropical Pedro Kourí.
Abstract:
The clinical histories of 12 AIDS patients whose histoplasmosis diagnosis has been confirmed by histopathological studies were reviewed aimed at knowing the main clinical and microbiological aspects of the disseminated progressive histoplasmosis. In every case it appeared as a febrile and waste disease with an elevated hepatomegaly frequency and generalized adenopathies. More than 50% of the patients had anemia and an accelerated erythrocyte sedimentation. The chest X-ray showed pulmonary lesions in 50% of the patients, whereas, the abdominal ultrasound allowed to observe hepatomegaly and splenomegaly in 58.3 and 41.6% of the patients, respectively. A low sensitivity was found in the culture of different clinical specimens as well as in the antibody detection techniques. It is discussed the need to improve tha laboratory diagnosis methods, particularly those which make possible the antigen detection in a fast and specific way.
Insights
Disseminated progressive histoplasmosis in AIDS patients presents as febrile illness with enlarged liver and lymph nodes. Current lab tests show low sensitivity, highlighting the need for improved diagnostic methods.
Area of Science:
- Infectious Diseases
- Immunology
- Mycology
Background:
- Disseminated progressive histoplasmosis is a severe opportunistic infection in patients with Acquired Immunodeficiency Syndrome (AIDS).
- Accurate and timely diagnosis is crucial for effective management and improved patient outcomes.
Purpose of the Study:
- To investigate the clinical and microbiological features of disseminated progressive histoplasmosis in AIDS patients.
- To evaluate the diagnostic performance of current laboratory methods for this condition.
Main Methods:
- Retrospective review of clinical histories of 12 confirmed AIDS patients with histoplasmosis.
- Analysis of clinical presentation, laboratory findings, and imaging results (chest X-ray, abdominal ultrasound).
- Assessment of culture sensitivity and antibody detection techniques.
Main Results:
- All patients presented with febrile illness, wasting, hepatomegaly, and generalized adenopathies.
- Anemia and elevated erythrocyte sedimentation rates were common (>50%).
- Pulmonary lesions observed in 50% of chest X-rays; hepatomegaly (58.3%) and splenomegaly (41.6%) noted on ultrasound. Culture and antibody tests showed low sensitivity.
Conclusions:
- Disseminated histoplasmosis in AIDS patients has characteristic clinical manifestations.
- Current diagnostic methods, including cultures and antibody detection, have limited sensitivity.
- There is an urgent need for improved laboratory diagnostic strategies, especially rapid and specific antigen detection methods.
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