Table 1.
AJCC, American Joint Committee on Cancer; IDC, invasive ductal carcinoma; ILC, invasive lobular carcinoma; HR, hormone receptor; ER, estrogen receptor; PR, progesterone receptor; HER2, human epidermal growth factor receptor 2; CTx, chemotherapy; S, surgery; RT, radiotherapy; HTx, hormone therapy.
a)Other types of histopathology were papillary (3), medullary (2), metaplastic (2), inflammatory (2), mixed mucinous and ductal (1), or angiosarcoma (1). b)Irrespective of HER2 status. c)Including hormone, radiotherapy, or surgery.