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Carcinoma écrino e apócrino em cães / Eccrine and apocrine carcinoma in dogs

Martins, Yanna Nascimento de Figueiredo; Sampaio, Rubia Avlade Guedes; Barbosa, Maria Joyce da Silva; Gois, Daniela Dantas de; Silva Neto, José Ferreira da; Franco, Camilla Ingrid Queiroz; Lucena, Ricardo Barbosa de.
Acta Sci. vet.; 48(suppl.1): Pub. 502, 6 abr. 2020. ilus
Artigo em Português | VETINDEX | ID: vti-25518


Background: Sweat gland carcinomas divide into eccrine, apocrine, mixed origin (eccrine and apocrine). Eccrine carcinoma(EC) is a rare malignant neoplasm of the sweat glands that can affect dogs, cats, and humans. EC can present itself as asolitary swelling in the pads, digits, or distal limbs. EC is more common in elder animals, and exhibits no predispositionaccording to breed. In humans, EC is more frequent in the head and neck, and is more likely to occur in mid-aged people;metastases can develop in any site of the body. A diagnosis of this type of tumor can be determined by histopathologicalexamination. Apocrine carcinomas occur most frequently in the axillary areas even though they may occur in other regionsof the body, and affect mainly elder animals.Case: A 13-year-old male mongrel dog with a history of presence of smooth reddish infiltrative nodule in the skin of thethorax, but with no history of progression, was examined. After running complementary tests, a fragment of the skin onthe thorax was taken for biopsy. The second animal was an 8-year-old female Golden Retriever, which was presented witha history of presence of a nodule on the right digital pad. After running complementary tests, a fragment of this nodulewas collected. In both cases, the excised fragments were placed in 10% buffered formalin and routinely processed forthe preparation of histological slides, which were stained with hematoxylin and eosin, and subjected to histopathologicalevaluation. Light microscopy analysis revealed, in both cases, the presence of a poorly delimited, non-encapsulated massinfiltrating the muscle and adipose tissue. Necrotic areas, and presence of eosinophilic material in the nucleus were observed.Additionally, the samples from both cases were subjected to immunohistochemical staining for cytokeratin (CK Pan).Discussion: A definitive diagnosis of sweat gland carcinoma...(AU)
Biblioteca responsável: BR68.1
Localização: BR68.1