ESR1 and neoplasm: Clinical: N/APathological: PR, ER, and HER2 statusRadiomics: B-mode images with parametric maps of QUS parameters (SS, SI, MBF, ASD, AAC, ACE, and SAS), texture features using GLCM (contrast, correlation, energy, homogeneity), and image quality metrics that compare the statistical properties of the core ROI & the margin which is 5 mm surrounding the tumor (CMR, CMCR).