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Original Article

Phycomycosis in a dog caused by unusual strains of Absidia corymbifera

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Pages 126-132 | Published online: 09 Jul 2009
 

Abstract

A case of phycomycosis in a corgi bitch is described. The lesions were in the left cervical lymph nodes and in the larynx, and followed a bite by another dog. Three causal organisms were isolated and identified as unusual strains of Absidia corymbifera. On histology and in KOH squash preparations of the lesions the hyphae were characteristically swollen and distorted. In culture the vegetative hyphae and rhizoids of the isolates were stunted and swollen to varying degrees. The isolates grew much more slowly than a normal strain of A. corymbifera and one died when a small inoculum was stored at room temperature for 9 days. Both morphologically and in their temperature relations the 3 isolates graded into one another.

This is the first occasion on which the causal organism has been isolated from phycomycosis in the dog.

Resumen

Se describe un caso de ficomicosis en una perra “corgi”. Las lesiones se encontraron en los ganglios linfáticos cervicales izquierdos y en la laringe después de ser mordida por otro perro. Se aislaron 3 organismos que se identificaron como cepas poco comunes de Absidia corymbifera. En preparaciones histológicas y en potasa de las lesiones las hifas se vieron caracteristicamente distorsionadas e hinchadas. En el cultivo las hifas vegetativas y los rizoides mostraban diversos grados de hinchamiento y desarrollo incompleto. Estas cepas crecían más lentamente que las cepas normales de A. corymbifera y una murió cuando un pequeño inóculo fue mantenido a temperatura de laboratorio durante 9 días. Tanto morfologicamente como en sus propiedades de temperatura, las 3 cepas se relacionaban una con otra.

Es el primer caso en que este organismo ha sido aislado de una ficomicosis canina.

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