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Updated: Jul 6, 2026

Histological Quantification to Determine Lung Fungal Burden in Experimental Aspergillosis
Published on: March 9, 2018
Pulmonary aspergillosis
George R Thompson1, Thomas F Patterson
1Division of Infectious Diseases, Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, Texas 78229, USA.
Abstract:
As the population of patients with prolonged neutropenia, those receiving hematopoietic stem cell transplantation or lung transplantation, or those with human immunodeficiency virus or acquired immunodeficiency syndrome continues to increase, the rising incidence of pulmonary aspergillosis is unlikely to diminish. Aspergillus species are ubiquitous in nature, have no geographic predilection, and the spectrum of disease they cause is myriad, ranging from noninvasive disease with colonization to disseminated disease with an associated high mortality rate. The extent of disease is thus largely responsible for both the choice and the duration of antifungal therapy. Recent years have seen an expansion of antifungal agents, with efficacy against Aspergillus requiring an understanding of the full spectrum of disease for them to be used appropriately. Diagnosis is often difficult because existing tests lack desired sensitivity or specificity.
Insights
Pulmonary aspergillosis is increasing in immunocompromised patients, including those with prolonged neutropenia and HIV/AIDS. Effective antifungal therapy requires understanding the full spectrum of Aspergillus-related disease, as diagnosis remains challenging.
Area of Science:
- Medical Mycology
- Infectious Diseases
- Pulmonology
Background:
- Rising incidence of pulmonary aspergillosis in immunocompromised patient populations.
- Increasing numbers of patients undergoing hematopoietic stem cell or lung transplantation.
- Growing prevalence of human immunodeficiency virus (HIV) and acquired immunodeficiency syndrome (AIDS).
Purpose of the Study:
- To highlight the increasing challenge of pulmonary aspergillosis.
- To emphasize the need for appropriate antifungal therapy selection and duration.
- To address diagnostic difficulties in identifying Aspergillus infections.
Main Methods:
- Review of current literature on pulmonary aspergillosis.
- Analysis of the spectrum of disease caused by Aspergillus species.
- Evaluation of the role of emerging antifungal agents.
Main Results:
- Pulmonary aspergillosis incidence is rising due to expanding at-risk populations.
- Aspergillus infections present a wide spectrum, from colonization to disseminated disease.
- Antifungal agent efficacy depends on understanding the full disease spectrum.
Conclusions:
- Pulmonary aspergillosis poses a significant and growing threat.
- Appropriate and timely antifungal treatment is crucial for patient outcomes.
- Diagnostic limitations necessitate improved sensitivity and specificity of testing methods.
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