Molecular identification of phaeohyphomycosis due to Alternaria infectoria in a patient with acute myeloid leukemia--a case report

Intricate isavuconazole therapy of a subcutaneous nodule caused by Alternaria infectoria in a heart transplant recipient

Invasive fungal infections have appeared to be increasingly emergent in immunocompromised patients, especially in solid organ transplant (SOT) recipients. The Alternaria genus encompasses more than 80 dematiaceus species. Among them, Alternaria alternata and Alternaria infectoria are the most frequent isolated as responsible for infection in humans. To our knowledge, we report the first case of a heart transplant recipient suffering from subcutaneous nodule caused by Alternaria infectoria and who was treated with isavuconazole. Despite all the promises of this new azole drug, one should keep in mind the potential great variability of the inter-individual responses for such complex patients. We demonstrate herein how it can be challenging to manage Alternaria infection in SOT recipients. More comprehensive studies and recommendations are expected in the context of Alternaria infections.

Cutaneous alternariosis in a renal transplant patient successfully treated with posaconazole: Case report and literature review

Cutaneous alternariosis is an uncommon fungal infection that most commonly presents in organ transplant patients on immunosuppressive therapy. There are no clinical trials or guidelines to guide treatment of this condition, however itraconazole is the most commonly used antifungal in published cases. Here we report on a case of cutaneous alternariosis in a renal transplant recipient treated with a newer antifungal, posaconazole. A review of published reports of cutaneous alternariosis since 2008 is also discussed.

Cutaneous Alternariosis Caused by Alternaria infectoria: Three Cases in Kidney Transplant Patients

The genus Alternaria has more than 80 species. Alternaria alternata and Alternaria infectoria are the most frequent species associated with infections in humans. Their clinical importance lies in the growing number of cases reported in immunocompromised patients. Herein, we report three cases of kidney-transplanted patients with different clinical presentations of cutaneous alternariosis and we discuss the treatment options.

A Suspected Squamous Cell Carcinoma in a Renal Transplant Recipient Revealing a Rare Cutaneous Phaeohyphomycosis by Alternaria infectoria

Background:

Squamous cell carcinoma of the skin is the most common neoplasm after organ transplantation. In addition, fungal infections are increasingly described in immunocompromised patients, such as kidney recipients.

Method and Results:

We report a case of a 64-year-old woman with a renal transplant presenting with 6-month-old skin lesions. In other centers, she had undergone previous biopsies, the results of which were suggestive of squamous cell carcinoma and aspecific inflammation. Therefore, she came to our center for surgical excision. Only our clinical experience and a detailed clinical history allowed us to doubt previous diagnoses and perform further examinations. Our investigation revealed an extremely rare fungus infection: phaeohyphomycosis by Alternaria infectoria. It was successfully treated with oral terbinafine until a complete regression of the lesions was achieved. At a 16-month follow-up visit, no recurrence of the skin lesion was observed.

Conclusion:

Despite a difficult diagnosis and rare occurrence, physicians and surgeons should be aware of infection with this emerging fungus in immunocompromised patients.