Vet Med - Czech, 2018, 63(5):216-224 | DOI: 10.17221/87/2017-VETMED

Ultrasonographic characteristics of benign mammary lesions in bitchesOriginal Paper

B. Gasser1, M.G.K. Rodriguez1, R.A.R. Uscategui*,1, P.A. Silva1, M.C. Maronezi1, L. Pavan1, M.A.R. Feliciano1,2, W.R.R. Vicente1
1 School of Agrarian Sciences and Veterinary Medicine, University Estadual Paulista "Julio de Mesquita Filho", Jaboticabal, Brazil
2 Department of Veterinary Medicine, Federal University of the "Reconcavo da Bahia", Cruz das Almas, Bahia, Brazil

The aim of this study was to evaluate the applicability of B-mode, Doppler, acoustic radiation force impulse elastography and contrast-enhanced ultrasound exams in the differentiation of neoplastic and non-neoplastic benign mammary lesions in bitches. This research was conducted as a prospective secondary observational cohort (2014-2016) study, which included 36 mammary lesions, evaluated physically and by ultrasound (B-mode, Doppler, contrast-enhanced ultrasound and acoustic radiation force impulse) exams prior to mastectomy and histopathological classification as neoplastic or non-neoplastic lesions. All ultrasonographic parameters studied were compared between histopathological classifications using Fisher's or Student's tests and differences were considered significant when P < 0.05. Out of 36 benign mammary lesions evaluated, 25 were classified as neoplastic and 11 as non-neoplastic. The qualitative and quantitative parameters evaluated using the different ultrasound methods were not effective (P > 0.05) in differentiating between neoplastic and non-neoplastic mammary masses in bitches. Nevertheless, some B-mode variables, such as longitudinal length (P = 0.0292), width/length ratio (P = 0.0001) and width/height ratio (P = 0.0001) showed limited efficacy in the differentiation of mammary lesions types. In conclusion, ultrasonographic evaluation of benign canine mammary lesions did not allow differentiation between neoplastic and non-neoplastic tissues and only a few B-mode variables may aid in the prediction of specific tumour types.

Keywords: Doppler; acoustic radiation force impulse; ARFI elastography; contrast-enhanced ultrasound; dogs; neoplastic

Published: May 31, 2018  Show citation

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Gasser B, Rodriguez MGK, Uscategui RAR, Silva PA, Maronezi MC, Pavan L, et al.. Ultrasonographic characteristics of benign mammary lesions in bitches. Vet Med - Czech. 2018;63(5):216-224. doi: 10.17221/87/2017-VETMED.
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