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Fatal Mucor pneumonia after treatment with 2-chlorodeoxyadenosine for non-Hodgkin's-lymphoma
H Szelényi1, H D Foss, E D Kreuser
1Department of Hematology/Oncology, Klinikum Benjamin Franklin, Freie Universität Berlin, Germany.
Abstract:
Fungal infections, in addition to bacterial and opportunistic infections such as Pneumocystis carinii pneumonia, may evolve in patients with infectious complications due to iatrogenic immunosuppression. Aside from common Candida and Aspergillus species, rare fungi like Mucor must be considered in patients with neutropenia or prolonged impaired T-cell function. Here we report on a patient with a low grade lymphoma who was treated with 2-chlorodeoxyadenosine because of disease progression. After recovery from Pneumocystis carinii pneumonia he presented again with clinical signs of pneumonia. No pathogen was found on bronchoscopy and he died rapidly. In the lungs a massive necrosis was seen in which nonseptated hyphae identified as Mucor species were demonstrated.
Insights
Rare fungal infections, such as Mucor, can be fatal in immunocompromised patients. This case highlights the importance of considering Mucor species in patients with neutropenia and pneumonia, even after initial recovery.
Area of Science:
- Medical Mycology
- Infectious Diseases
- Hematology
Background:
- Iatrogenic immunosuppression in cancer patients can lead to opportunistic infections, including bacterial, viral, and fungal pathogens.
- While common fungi like Candida and Aspergillus are frequently encountered, rare fungal species pose a significant diagnostic and therapeutic challenge.
- Patients with neutropenia or impaired T-cell function are particularly susceptible to invasive fungal infections.
Observation:
- A patient with low-grade lymphoma, treated with 2-chlorodeoxyadenosine for disease progression, developed Pneumocystis carinii pneumonia.
- Following recovery from Pneumocystis carinii pneumonia, the patient presented with recurrent pneumonia symptoms.
- Initial bronchoscopy failed to identify any specific pathogen, and the patient's condition rapidly deteriorated.
Findings:
- Autopsy revealed massive lung necrosis.
- Microscopic examination of lung tissue demonstrated nonseptated hyphae consistent with Mucor species.
Implications:
- This case underscores the critical need to consider rare fungal infections, specifically Mucor species, in the differential diagnosis of pneumonia in immunocompromised patients.
- Early recognition and appropriate antifungal therapy are crucial for improving outcomes in patients with invasive mucormycosis.
- Further research into the diagnosis and management of rare fungal infections in immunocompromised hosts is warranted.