Granuloma lepróide canino : relato de caso

Abstract

We report a case of canine leproid granuloma in the city of Contagem, in the metropolitan region of Belo Horizonte, Minas Gerais. A boxer dog had nodular lesions some of them ulcerated and firm in the pinnae. The nodules were removed surgically and submitted to histopathologic analysis in which were evaluated irregular pieces of tissue. The microscopic examination revealed marked inflammatory infiltrate composed predominantly by macrophages and neutrophils arranged in nodules and diffusely in the dermis. The macrophages seen presented broad cytoplasm slightly eosinophilic, with epithelioid arrangement. Multifocal areas of mild lymphocytic infiltrate were seen. The Ziehl Neelsen staining technique was used to confirm the diagnosis and it showed a large amount of alcohol acid resistant bacilli on histological sections. The diagnosis was based on clinical and histopathological findings reports with the detection of alcohol-acid resistant microorganisms in skin fragments.