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Updated: Aug 19, 2026

Detection of Invasive Pulmonary Aspergillosis in Haematological Malignancy Patients by using Lateral-flow Technology
Published on: March 22, 2012
Saprophytic invasion of infarcted pulmonary tissue by Aspergillus species
Abstract:
Saprophytic invasion of infarcted pulmonary tissue has received only passing reference in published reports. Five patients with colonisation of pulmonary infarcts by aspergillus are described, with discussion of the clinical and histopathological features. The characteristic features were widespread invasion of dead tissue by fungal hyphae, in three cases with liquefaction resulting in the production of a cavitated lesion. There was no evidence that the vascular thrombosis and the consequent infarction present in four cases were caused by the fungus. In two cases the lesions were resected as possible peripheral cavitated tumours, and in two they were incidental findings at necropsy in patients who had had carcinoma and received radiotherapy. In the fifth case the clinical diagnosis was pneumococcal pneumonia but the possibility of primary aspergillus pneumonia was raised.
Insights
This study details five cases of Aspergillus fungal invasion in pulmonary infarcts, highlighting its role in tissue destruction and cavity formation. The findings emphasize the need to consider fungal infection in lung infarcts, especially in immunocompromised patients.
Area of Science:
- Pulmonology
- Mycology
- Pathology
Background:
- Saprophytic fungal invasion of pulmonary infarcts is infrequently documented.
- Aspergillus species are known opportunistic pathogens affecting the respiratory system.
Observation:
- Five cases of pulmonary infarcts colonized by Aspergillus were analyzed.
- Clinical and histopathological features of fungal invasion were examined.
Findings:
- Widespread invasion of infarcted lung tissue by fungal hyphae was observed.
- Liquefaction and cavitation of lung tissue occurred in three cases.
- Fungal infection was not the primary cause of infarction in four cases.
Implications:
- Aspergillus colonization can lead to significant lung tissue destruction and cavitation.
- This condition may be misdiagnosed as malignancy or other pulmonary infections.
- Recognition of fungal invasion in pulmonary infarcts is crucial for appropriate patient management.
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