Multiple Skin Abscesses Caused by Rhizopus sp. Infection after Candida albicans Infection in an Immunocompromised Patient

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A 66-year-old woman with diabetes who was treated with prednisolone (15 mg/day) for autoimmune hepatitis developed multiple erythematous nodules with retention of purulent fluid on her lower right limb. Candida albicans was cultured from the nodules. She was started on oral fluconazole, and the lesions subsided. However, multiple dark-red abscesses and indurations newly appeared on the left crus. Histopathological examination showed numerous branched hyphae, and tissue culture yielded a Rhizopus microsporus-related fungus. She was treated with liposomal amphotericin B combined with drainage and debridement. However, she died because of poor control of the infection and hepatic disorder.