Dermatite fúngica associada à Rhodotorula glutinis em cão (Canis familiaris)

Abstract

The genus Rhodotorula includes eight species that can be isolated from soil, feces, food and air. This agent was considered nonpathogenic, but with the increase of immunosuppressed humans in the last two decades, the species R. mucilaginosa, R. glutinis and R. minuta became potentially pathogenic agents. There have been few veterinary clinical reports associated with Rhodotorula spp. and the aim is to describe the first case of fungal dermatitis caused by R. glutinis in immunosuppressed dog due to visceral leishmaniasis and osteosarcoma in the city of Cuiabá-Mato Grosso. An 11-year-old male mongrel dog was examined to the Veterinary Hospital with skin lesions and the diagnosis was dermatophytosis and the treatment was implemented with topical tea tree oil for one month, but the treatment failure. The animal returned to the Veterinary Hospital with bleeding in the injured area of the tail and was performed biopsy for microbiological and histopathology evaluation. In the microbiological and histopathological analysis, a yeast was isolated and yeast-like structure in silver staining were observed, respectively. The isolated yeast was identified as R. glutinis by DNA sequencing. A new treatment was implemented without clinical improvement. The animal was immunosuppressed due infection by Leishmania infantum chagasi associated with osteosarcoma, and its clinical conditions evolved to death. This report describes the first case of fungal dermatitis R. glutinis in immunosuppressed dog due to leishmaniasis and osteosarcoma in Cuiaba-MT.