Disease progression of dermatophytic pseudomycetoma in a Persian cat.

BACKGROUND Dermatophytic pseudomycetoma is a subcutaneous fungal infection by Microsporum canis. AIMS This work describes a case of dermatophytic pseudomycetoma in a Persian cat. PATIENT AND METHODS A 3-year old female Persian cat showing alopecia, scaling and ulcerated nodules throughout the body, with presence of ulcerated nodules with yellow granular discharges on the dorsum, close to the tail. Mycological and histopathological examinations were realized. RESULTS Diagnosis of dermatophytic pseudomycetoma was established. The cat was treated with griseofulvin, and surgical excision was carried out. Response to therapy was effective during the first months, during which a reduction in nodule frequency was observed. However, despite maintaining the therapy levels, the lesions relapsed and progressed to the point of causing the animal's death. CONCLUSION The clinic evolution showed the progressive and recurrent character of dermatophytic pseudomycetoma.