PGR and triple-negative breast carcinoma: This type of breast salivary gland tumor is usually negative for immunohistochemical markers of estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor receptor 2 (HER-2), and most of which have low invasive potential and good prognosis.[3,4] Therefore, it is very important to distinguish them from other highly malignant triple negative breast cancers.