ESR1 and neoplasm: Clinical: N/APathological: molecular markers: ER, PR, & HER2Radiomics: features extracted from tumor core and margins (3, 5, 10 mm), B-mode images with parametric maps of QUS parameters (SS, SI, MBF, ASD, AAC, & ACE), image quality features (CMR, CMCR), & textural analysis of tumor core using GLCM (contrast, correlation, energy, homogeneity)