Disseminated cutaneous Pseudallescheria boydii

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Abstract
As increasingly aggressive chemotherapeutic regimens are used to treat malignancy, more patients will become susceptible to various opportunistic pathogens. Specifically, several fungal organisms previously viewed as relatively non-pathogenic are more frequently causing serious disease in these patients. Identification of these organisms is of paramount importance, as some are relatively resistant to standard antifungal therapies. We report a patient with disseminated cutaneous Pseudallescheria boydii, diagnosed from histopathological examination and culture of a skin biopsy specimen. Identification of the organism was achieved shortly before the patient died. Clinicians must be aware of the numerous emerging opportunistic pathogens, which may require special culture techniques for diagnosis and varied or combined modes of therapy.