Primary Cutaneous Invasive Aspergillosis in Neutropenic Patient Post Finger Trauma
Overview
This case study describes a patient with acute myeloid leukemia who developed primary cutaneous aspergillosis (PCA) caused by Aspergillus flavus following finger trauma and subsequent chemotherapy-induced neutropenia. The lesion rapidly progressed to necrotizing soft tissue infection requiring amputation, highlighting the critical need for early recognition and antifungal treatment in immunocompromised patients.
Background
Primary cutaneous aspergillosis is a rare fungal infection typically resulting from direct skin inoculation, often in immunocompromised hosts. Patients with hematologic malignancies and prolonged neutropenia are at increased risk for invasive fungal infections. Traumatic skin injuries can serve as portals of entry for fungal pathogens, which may remain clinically silent until immune suppression occurs. Early diagnosis and appropriate antifungal therapy are essential to prevent severe outcomes.
Data Highlights
The patient was a 60-year-old male with acute myeloid leukemia undergoing induction chemotherapy, who developed febrile neutropenia and a necrotic lesion on the right fifth finger. Despite initial treatment with liposomal amphotericin B and antibiotics, the lesion progressed rapidly, confirmed by bone culture to be Aspergillus flavus. Amputation was performed, and subsequent voriconazole therapy for 11 weeks led to clinical improvement without dissemination.
Key Findings
Primary cutaneous aspergillosis can arise from direct inoculation at sites of trauma, particularly in neutropenic patients.
Aspergillus flavus was identified as the causative pathogen in this case of PCA.
The lesion remained inactive prior to neutropenia but rapidly progressed to necrotizing infection after chemotherapy-induced immunosuppression.
Initial antifungal treatment with liposomal amphotericin B was insufficient; voriconazole was effective post-amputation.
Thorough history taking is crucial to identify prior trauma that may predispose to invasive fungal infections.
Early recognition and prompt antifungal therapy are vital to prevent severe morbidity such as amputation.
Clinical Implications
Clinicians should maintain a high index of suspicion for invasive fungal infections in neutropenic patients presenting with necrotizing skin lesions, especially with a history of trauma. Early diagnostic evaluation and initiation of appropriate antifungal therapy, such as voriconazole for Aspergillus species, are critical to improve outcomes. Consideration of prophylactic antifungal strategies may be warranted in high-risk patients undergoing chemotherapy.
Conclusion
This case underscores the potential for rapid progression of primary cutaneous aspergillosis in neutropenic patients following trauma and highlights the importance of early diagnosis and targeted antifungal treatment to mitigate severe complications.
References
Case Study Source 2024 -- Primary Cutaneous Invasive Aspergillosis in a Neutropenic Patient After Finger Trauma
