Gasser, B. [UNESP]Rodriguez, M. G. K. [UNESP]Uscategui, R. A. R. [UNESP]Silva, P. A. [UNESP]Maronezi, M. C. [UNESP]Pavan, L. [UNESP]Feliciano, M. A. R. [UNESP]Vicente, W. R. R. [UNESP]2018-11-292018-11-292018-01-01Veterinarni Medicina. Prague: Czech Academy Agricultural Sciences, v. 63, n. 5, p. 216-224, 2018.0375-8427http://hdl.handle.net/11449/166167The 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.216-224engDoppleracoustic radiation force impulseARFI elastographycontrast-enhanced ultrasounddogsneoplasticArtigo10.17221/87/2017-VETMEDWOS:000433389500003Acesso restrito