Abstract
Phialophora verrucosa has rarely been reported for causing phaeohyphomycosis, which tends to occur in immunocompromised individuals. The case of primary subcutaneous phaeohyphomycosis due to P. verrucosa in an otherwise healthy Chinese female is presented. The girl presented with asymptomatic skin lesions when she was only 16 year old. Histological examinations revealed multiple dematiceous hyphael elements in the dermis and subcutaneous tissues. Fungal cultures were identified as P. verrucosa repeatedly based on the morphological features and confirmed by the internal transcribed spacer region nucleotide sequencing. The infection was so extremely recalcitrant that prolonged systemic antifungal regimens for 12years revealed limited effect. The skin lesions slowly progressed and caused marked disfigurement despite the encouraging results of in vitro susceptibility. However, no relevant side effects have been reported in the course, and the patient gave birth to a healthy baby while under the maintenance treatment of itraconazole and terbinafine. This case is special in terms of the early onset, the rare clinical aspect of the pathogen, the discrepancy between in vitro and in vivo antifungal activities and especially the prolonged and recalcitrant course in such an otherwise healthy host.
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