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Clinical and ultrasonographic aspects of benign and malignant mammary tumors in female dogs

Guedes, Paula Elisa Brandão; Daniel, Hannah Bandeira Thame; Sampaio, Kátia Moema Oliveira Rosa; Silva, Elizângela Barboza da; Ferreira, Manoel Luiz; Lavor, Mário Sérgio Lima de; Clark, Rosana Maria de Oliveira; Wenceslau, Amauri Arias; Said, Roueda Abou; Silva, Fabiana Lessa.
Acta Sci. vet.; 48: Pub. 1723, Apr. 3, 2020. ilus, tab
Artigo em Inglês | VETINDEX | ID: vti-25594

Resumo

Background: Mammary neoplasms in dogs are commonly observed in veterinary clinical routine, most of which beingmalignant. Hormonal stimulation, endogenous or exogenous, may possibly influence its development. In addition to clinicalevaluation, ultrasound analysis can provide information about the characteristics of breast lumps. The association betweenclinical-epidemiological and pathological data is important for diagnosis. Therefore, given the importance of this pathologyfor the health of affected dogs, we aimed to evaluate the clinical and ultrasound alterations, along with the factors associated with the development of benign and malignant mammary neoplasms in female dogs.Materials, Methods & Results: We examined 47 samples from the mammary tumors of 35 female dogs at the Small Animal Clinic of the Veterinary Hospital (HV) of the Santa Cruz State University (UESC). The dogs underwent a completeclinical examination, with clinical staging, via TNM classification, followed by hematological, biochemical, radiologicaland ultrasound, abdominal, and breast exams. Breast ultrasound examination was used to evaluate the shape parameterssuch as, limits, margins or contour, ecotexture, echogenicity, hyperechoic halo, posterior acoustic shading, surroundingchanges, and nodule components. These criteria were associated with the histopathological classification of neoplasms.Epidemiological data was studied through an adapted questionnaire containing information on risk factors associated withbreast cancer. The same questionnaire was applied to tutors of 19, age-matched, female dogs with no history of breastcancer. The results revealed that most female dogs with neoplasia were over eight years of age, with no specific breed andwere not castrated, and 31.4% of them had already been administered with contraceptives during the reproductive period...(AU)
Biblioteca responsável: BR68.1
Localização: BR68.1