ERBB2 and breast cancer: The analysis of HER2-low expression breast cancer patients and those with HER2-zero revealed no statistically significant differences in the following variables: age, lesion diameter, LN metastasis, BIRADS score, elasticity score, SWV minimum, SWV mean, SWV maximum, presence of convergence sign, PR status, and Ki-67 status (p > 0.05).