Related Experiment Videos
Recognition and successful management in pulmonary aspergillosis in leukemia
Abstract:
Invasive pulmonary aspergillosis is a common fungal infection in the compromised host. The outcome has been generally poor and, until recently, most reports are derived from autopsy series. We report nine patients with leukemia and the characteristic clinical presentation of pulmonary infarction. There is histological evidence that infarction is due to fungal invasion of the pulmonary arterial system with distal hemorrhagic infarction, cavitation, and mycetoma formation. This complete evolution was detected in six patients, none of whom had previous cavitary pulmonary disease. Therapy included amphotericin B (9 patients), aerosolized nystatin (6 patients), and 5-fluorocytosine (5 patients). Complete resolution of the pulmonary lesions occurred in six patients with a subsequent median survival of 13.5 months (range: 5-32+ months). Three patients died with continuing pulmonary infiltrate. Despite the antifungal chemotherapy, resolution seemed to correlate best with recovery of circulating neutrophils.
Insights
Invasive pulmonary aspergillosis in leukemia patients often leads to poor outcomes. However, recovery of neutrophils, alongside antifungal therapy, correlated with resolution of lung lesions.
Area of Science:
- Mycology
- Pulmonology
- Hematology
Background:
- Invasive pulmonary aspergillosis (IPA) is a serious fungal infection in immunocompromised individuals, particularly those with hematologic malignancies.
- Historically, outcomes for IPA have been poor, with limited diagnostic capabilities before autopsy.
Observation:
- This study details nine leukemia patients presenting with pulmonary infarction, a characteristic clinical sign of IPA.
- Histological analysis revealed fungal invasion of pulmonary arteries, leading to hemorrhagic infarction, cavitation, and mycetoma formation.
Findings:
- Complete resolution of pulmonary lesions was observed in six patients treated with amphotericin B, aerosolized nystatin, and 5-fluorocytosine.
- Resolution of IPA correlated significantly with the recovery of circulating neutrophils, independent of antifungal therapy duration.
- Six patients achieved complete resolution and had a median survival of 13.5 months, while three patients died from persistent pulmonary infiltrates.
Implications:
- Neutrophil recovery is a critical factor in resolving invasive pulmonary aspergillosis in leukemia patients.
- Early detection and treatment strategies targeting both fungal infection and host immune reconstitution are essential for improving IPA outcomes.