The postoperative pathology results of the right breast revealed invasive ductal carcinoma, tubule forming type, pT1c (11 mm), Ly0, V0, f, nuclear grade 1, histological grade 1 (Fig. 5a and b), estrogen receptor (ER) J-score 3b (Fig. 5c) and progesterone receptor (PgR) J-score 2 (Fig. 5d), human epidermal growth factor receptor-2 (HER2) score 2 (Fig. 5e), no amplification of HER2 according to fluorescent in situ hybridization (FISH), and Ki-67 score, 5% (Fig. 5f). This evidence concerns the gene ESR1 and invasive ductal breast carcinoma.