Ultrasonographic evaluation of depth–width ratio (D/W) of benign and malignant mammary tumors in dogs

Abstract

Depth-width ratio (D/W) is the only quantitative item in the criteria recommended by the Japanese Ultrasound Society for the evaluation of breast tumors in humans. However, the usefulness of the D/W has not been evaluated in dogs. Eighty-six mammary masses in 34 female dogs underwent ultrasonographic examination to determine the D/W and other characteristics. Results of ultrasonographic and histopathologic examinations were compared. The D/W of malignant tumors was significantly greater than that of benign tumors, and it had a sensitivity of 56.3% and a specificity of 92.9% for the diagnosis of malignancy when the threshold of D/W was 0.7. In addition, irregular margin, polymorphous shape and heterogeneous internal echographic characteristics were correlated with malignancy.

Accuracy of four ultrasonography techniques in predicting histopathological classification of canine mammary carcinomas

“…However, in the present study, only width:length ratio greater than 0.53 obtained by B‐mode ultrasonography enabled the identification of special type carcinomas with acceptable accuracy. These findings are in agreement with previous reports, which have identified this ratio to be an indicator of malignancy in mammary tumors in women and female dogs . Thus, this parameter can be used as a simple and economical tool in the diagnosis of mammary neoplasms in female dogs.…”

“…These findings are in agreement with previous reports, which have identified this ratio to be an indicator of malignancy in mammary tumors in women and female dogs. 6,7,16 Thus, this parameter can be used as a simple and economical tool in the diagnosis of mammary neoplasms in female dogs.…”

“…Acoustic radiation force impulse elastography was considered a promising technique in determining tumor malignancy. On the other hand, contrast‐enhanced ultrasonography enables the evaluation of capillarization evaluation but not malignancy differentiation …”

“…On the other hand, contrast-enhanced ultrasonography enables the evaluation of capillarization evaluation but not malignancy differentiation. 2,[4][5][6] A recent study involving 153 female dogs and 300 mammary masses evaluated and compared the efficacy of the ultrasound methods currently available, B-mode, Doppler, contrast enhanced ultrasonography, and elastography-acoustic radiation force impulse in predicting tumor malignancy. B-mode measurements showed 67.9% sensitivity and 67.6% specificity; Doppler, 79.2% sensitivity and 70.8% specificity; contrast enhancement ultrasonography, 80.2% sensitivity and 16.7% specificity; and acoustic radiation force impulse shear wave velocities, 94.7% sensitivity and 97.2% specificity.…”

Trans-perineal ultrasonographic monitoring of intravaginal transmissible venereal tumour regression with vincristine sulphate chemotherapy in dogs: a study of twelve cases

“…Ultrasonography is considered as a user friendly, noninvasive, and real-time diagnostic modality in veterinary practice to diagnose, assess, and monitor the therapeutic effect on different tumours in dogs (Barthez et al, 1998;Feliciano et al, 2017;Naughton et al, 2012;Tagawa et al, 2016). The importance of the trans-perineal ultrasonographic characteristics of the birth canal of bitches during pregnancy and dystocia has been documented (Wickramasekara and de Silva, 2019).…”