Canine Sporotrichosis: Report of 15 Advanced Cases
Pesquisa Veterinária Brasileira(2018)
Abstract
ABSTRACT: Sporotrichosis is a chronic, granulomatous and usually lymphocutaneous infection of animals and humans, caused by a dimorphic fungus, Sporothrix schenckii complex. The disease in dogs is considered rare, however, in the last years a crescent registration of cases was observed in Brazil, especially in the city of Rio de Janeiro. Fifteen dogs with ulcerated cutaneous lesions were seen at the Dermatology Service in the Small Animal’s Hospital at Universidade Federal Rural do Rio de Janeiro, between January 2014 and October 2015. Most lesions were located on the head, mainly the nose. Lesions were even seen on the chest, disseminated on the body and on the limbs. Three dogs (20%) exhibited the cutaneous-lymphatic form, with lesions initially on the distal aspect of one leg and ascending via lymphatics up the leg to the trunk and head. It was not ruled out the disseminated form in at least 3 dogs (20%). They had consistent signs of generalized or disseminated disease exhibiting respiratory symptoms (nasal discharge, sneezing, stertorous breathing), anorexia and weight loss. Draining tracts and cellulitis were very common. Some had large areas of skin necrosis with exposure of muscle and bone. Definitive diagnosis was obtained by cytological examination of exudates, histological examination, and/or isolation of S. schenckii complex by fungal culture. Because of the severity of the lesions that mimic other disorders like neoplasms or autoimmune skin diseases, and due to the difficulties of getting an accurate diagnosis, this study describes 15 advanced cases of canine sporotrichosis.
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Key words
Canine sporotrichosis,Sporothrix schenckii,skin,dogs,ulcerations,levedurosis,zoonoses,mycoses
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