Strain ratio elastography ultrasound of palpable mass of the breast is one of ultrasound examination based on semiquantitative analysis, is currently widely used to assess tissue stiffness that vary. Strain ratio elastography ultrasound is expected to be able to establish a quick and proper diagnosis to get the right therapy resulting in lower morbidity and mortality in breast carcinoma. Strain ratio elastography ultrasound have been more useful on the morphology of lesions such as suspicious atypical benign (BIRADS 3), suspected Malignant (BIRADS 4), suggestive of Malignancy (BIRADS 5). The aim of this study to determine the results of the diagnostic tests strain ratio elastography ultrasound associated with histopathology in palpable breast mass in Dr. Hasan Sadikin General Hospital. This research is an analytic observational study and a diagnostic test of strain ratioelastographyultrasound associated with histopathology in palpable breast mass with a model to assess the validity of cross sectional. Sampling was conducted prospectively and performed in the Department of Radiology Dr. Hasan Sadikin General Hospital Bandung from November 2016 to January 2017. Data analysis using univariate analysis and bivariate analysis and Chi Square test. Results, the subject of study are 32 female patients, the youngest are 21 years old and the oldest are 72 years old. The results of diagnostic tests strain ratio elastography ultrasound in differentiating palpable breast mass after being confirmed by histopathology in Dr. Hasan Sadikin General Hospital Bandung with a sensitivity 81.5%, specificity 80.0%, accuracy of 81.3%, PPV 95.7% and NPV 44.4%. Conclusion: strain ratio elastography ultrasound has value of sensitivity and specificity that is high enough in differentiating palpable breast mass after being confirmed by histopathology in Dr. Hasan Sadikin General Hospital Bandung.