ERBB2 and invasive ductal breast carcinoma: She underwent a right radioactive seed-localized lumpectomy and sentinel lymph node biopsy in December 2019 demonstrating two foci of grade 3 invasive ductal carcinoma (0.7 cm and 0.25 cm) with negative margins and negative sentinel lymph nodes, estrogen receptor low-positive (5%), progesterone receptor negative (0%), and Her-2/neu negative (IHC score 1+).