Atypical Dermatophilus congolensis infection in a three-year-old pony

作者：Byrne Barbara A^*; Rand Courtney L; McElliott Valerie R; Samitz Eileen M; Brault Stephanie A

来源：Journal of Veterinary Diagnostic Investigation, 2010, 22(1): 141-143.

• Dermatophilosis
• Dermatophilus congolensis
• horses
• lymphadenopathy

Dermatophilosis caused by Dermatophilus congolensis causes exudative dermatitis in a variety of species. The infection is generally limited to the cutaneous tissues, where infection is acquired from the environment and bacteria penetrate into keratinized epithelium through epithelial disruption. A 3-year-old pony filly was examined for enlarging mandibular lymph nodes during the preceding 10 months. Biopsy of the node revealed mixed and granulomatous inflammation and thick, filamentous Gram-positive bacteria. Dermatophilus congolensis, confirmed by biochemical testing and sequencing of the ribosomal RNA gene, was cultured from it sample aspirated from the infected site. Dermatophilus congolensis should be considered as a possible etiologic agent associated with lymphadenopathy and granulomatous inflammation in the horse.

• 出版日期2010-1