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Detection of Invasive Pulmonary Aspergillosis in Haematological Malignancy Patients by using Lateral-flow Technology
Published on: March 22, 2012
Aspergillus fumigatus Bloodstream Infection in the Absence of Classic Risk Factors: Expanding the Spectrum of
Marcos Molina1, Nismat Javed1, Shalini Penikilapate1
1Internal Medicine, BronxCare Health System, New York, USA.
Abstract:
We report an unusual case of Aspergillus fumigatus fungemia in a 65-year-old male with multiple comorbidities including, human immunodeficiency virus (HIV), chronic obstructive pulmonary disease (COPD), diabetes mellitus, hepatitis C, and metastatic small cell lung cancer on chemotherapy. He presented with pneumonia and acute hypoxic respiratory failure requiring intubation. The patient developed septic shock and a peripherally inserted central catheter (PICC-line)-associated methicillin-sensitive Staphylococcus aureus (MSSA) bacteremia treated with intravenous (IV) cefazolin. Blood cultures unexpectedly revealed A. fumigatus despite a lack of classic risk factors, other than advanced acquired immune deficiency syndrome (HIV/AIDS), such as prolonged neutropenia or stem cell transplantation. Suspected sources included disseminated infection from the lungs and/or the infected PICC line. This case highlights the diagnostic and therapeutic challenges of invasive aspergillosis, a rarely reported and poorly understood entity with a high mortality rate. Further studies are needed to better characterize the epidemiology, risk factors, and optimal management of Aspergillus fungemia in diverse immunocompromised populations.
Insights
This case study details Aspergillus fumigatus fungemia in an immunocompromised patient. It highlights diagnostic challenges and the need for further research into invasive aspergillosis in diverse populations.
Area of Science:
- Medical Mycology
- Infectious Diseases
- Critical Care Medicine
Background:
- A 65-year-old male with multiple comorbidities including HIV, COPD, diabetes, hepatitis C, and metastatic lung cancer presented with pneumonia and respiratory failure.
- The patient developed septic shock and secondary bacteremia (MSSA) while on chemotherapy.
Observation:
- Blood cultures unexpectedly revealed Aspergillus fumigatus fungemia.
- The patient lacked typical risk factors for invasive aspergillosis, such as neutropenia or stem cell transplant, apart from advanced HIV/AIDS.
Findings:
- The suspected source of A. fumigatus was disseminated infection from the lungs or the PICC line.
- This case underscores the diagnostic and therapeutic difficulties associated with invasive aspergillosis.
Implications:
- Invasive aspergillosis is rarely reported in this context and carries a high mortality rate.
- Further studies are crucial to understand the epidemiology, risk factors, and optimal management of Aspergillus fungemia in immunocompromised individuals.
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