Sporotrichosis in renal transplant patients: two case reports and a review of the literature

• Published in: Journal of medical case reports 2020-06, Vol.14 (1), p.79-8, Article 79
• Main Authors: Amirali, Mazhar Hussein, Liebenberg, Jacques, Pillay, Sheylyn, Nel, Johan
• Format: Article
• Language: English
• Subjects: Adult; Amphotericin B; Amphotericin B - therapeutic use; Antifungal Agents - therapeutic use; Antiparasitic agents; Blood pressure; Case Report; Case reports; Creatinine; Deoxycholic acid; Deoxycholic Acid - therapeutic use; Drug Combinations; Environmental history; Fungal infections; Health aspects; Humans; Hypertension; Infection; Itraconazole; Itraconazole - therapeutic use; Kidney diseases; Kidney Transplantation; Male; Meningitis, Fungal - diagnosis; Meningitis, Fungal - drug therapy; Meningitis, Fungal - microbiology; Middle Aged; Opportunistic Infections - diagnosis; Opportunistic Infections - drug therapy; Opportunistic Infections - microbiology; Patients; Renal transplant; Skin; Skin Ulcer - drug therapy; Skin Ulcer - microbiology; Sporothrix schenckii; Sporotrichosis; Sporotrichosis - diagnosis; Sporotrichosis - drug therapy; Temperature; Transplant Recipients; Transplants & implants; Ulcers
• ISSN: 1752-1947; 1752-1947
• DOI: 10.1186/s13256-020-02385-x

Sporotrichosis is a rare fungal infection in transplant patients; among these patients, it occurs mostly in renal transplant patients. Sporothrix schenkii is the primary pathogen responsible. A high index of suspicion is required to make the diagnosis keeping important differential diagnoses in mind. History of trauma through recreational or occupational exposure to the fungus may assist in making the diagnosis. Treatment is difficult, with long-term use of potentially nephrotoxic and cytochrome P450 inhibitor antifungal agents leading to potential calcineurin inhibitors toxicity. We describe two renal transplant patients presenting with distinct sporotrichosis infection: "Case 2" being only the second reported case ever of meningeal sporotrichosis. We subsequently review the general aspects of sporotrichosis, specifically in renal transplant patients as described in the medical literature. Case 1, a 43-year-old mixed ancestry male patient presented with a non-healing ulcer on the left arm for 1 year, he was diagnosed with cutaneous sporotrichosis and was successfully treated with itraconazole monotherapy. Case 2, a 56-year-old mixed ancestry male patient presented with a slow decline in functions, confusion, inappropriate behavior, rigors and significant loss of weight and appetite over the past 4 months, he was diagnosed with meningeal sporotrichosis and was successfully treated with a combination of deoxycholate amphotericin B and itraconazole. Physicians taking care of renal transplant patients should have a high index of suspicion for sporotrichosis infection particularly when conventional therapy for common conditions fails. Susceptibility testing is recommended to identify the most effective antifungal agent and its dose. The slow nature of growth of Sporothrix schenkii necessitates patients to be on amphotericin B until the time results are available. Finally, there is a need to be aware of potential drug-drug interactions of the azoles with calcineurin inhibitors and the required dose adjustments to prevent therapy related adverse events.