ESR1 and neoplasm: The tumor ADC value was significantly associated with tumor size (p = 0.021) and the Ki-67 index (p = 0.035), but was not associated with the histological grade (p = 0.103), ER status (p = 0.296), PR status (p = 0.324), HER2 status (p = 0.381), axillary LNM (p = 0.111), or LVI (p = 0.769).