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Invasive Phaeohyphomycosis Caused by Curvularia Species in a Dog

Abstract

A 2-year-old female Boxer dog was presented with a history of skin lesions that started 1 month after being given oral glucocorticoids for a neurologic problem. Clinically, the animal had focal areas of alopecia with papules and nodules often with ulceration overlain by crusts. Lesions were most common on the dorsum and the lateral aspects of the trunk and extremities. Histologic evaluation revealed pigmented fungal organisms within the lumina of hair follicles and throughout the dermis and subcutis. These organisms were associated with a multinodular, pyogranulomatous luminal folliculitis/furunculosis, dermatitis, and panniculitis. Curvularia sp. was isolated from the cutaneous lesions. The histologic identification of dematiaceous fungal organisms in the hair follicles may explain how phaeohyphomycosis can occur without history of a penetrating injury.

Key words: Curvularia; dematiaceous fungi; dogs; phaeohyphomycosis; skin.

Request reprints from Dr. P. Herráez, Department of Histology and Pathological Anatomy, Facultad de Veterinaria, ULPGC, Trasmontaña S/N, 35416, Arucas, Gran Canaria (Spain). E-mail: herraez{at}cicei.ulpgc.es.

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