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Peritoneal cryptococcosis in a dog

Silva, Beline Mergulhão de Oliveira Carvalho da; Souza, Natália Freitas de; Pereira, Washington Luiz Assunção.
Acta sci. vet. (Online); 49(suppl.1): Pub. 607, Feb. 18, 2021. ilus
Artigo em Inglês | VETINDEX | ID: vti-30745


Background: Cryptococcosis is an opportunistic, systemic mycotic disease caused by yeasts of genus Cryptococcus.Cryptococcus neoformans might cause serious public health problems, as they can be transmitted to humans, domesticand wild animals. In cats and dogs, the main site of infection is the upper lower respiratory tract, however, the infectioncan extend and affect other sites in the organism, however, the peritoneal manifestation of the disease is rare. Thus, thepresent work aims to report a case of cryptococcosis in a canine, mixed breed, female, adult, from the Metropolitan Regionof Belém, PA, Brazil.Case: A mixed breed dog, female, adult was admitted in a veterinary hospital at Belém, presenting abdominal discomfortand, after the clinical examination, emergency exploratory laparotomy was indicated, and it were observed disseminatedlesions in the abdominal cavity, with multiple nodules attached to the peritoneum and intestinal serosa and bladder, uterus,among other organs. Fragments from the surgical biopsy were fixed, and processed routinely according to the techniquesfor histological tissue processing. Histological examination revealed a predominance of granulomatous lesions in peritoneum and mesentery organs. It was observed a discrete inflammatory reaction of macrophages, epithelioid cells andgiant cells, many in phagocytosis of spherical or ovoid organisms, with a thick capsule and a clear perinuclear halo. Inthe PAS staining, the Cryptococcus conidia presented eosinophilic characteristics and some of them had the capsule welldemarcated, which was shown to be radiated. Also it was possible to see the budding yeast and in the Grocott stain, theCryptococcus stained in black.Discussion: Cryptococcosis with peritoneal involvement in animals is rarely reported in the literature. Cryptococcus is afungus that presents tropism by the...(AU)
Biblioteca responsável: BR68.1
Localização: BR68.1