The tumor was positive for C‐erB‐2 (3+), Ki67 (20%), GATA‐3 (+++), and CK7 (++++), suggesting a non‐special type, histological grade II (tubular formation three points, nuclear grade two points, mitotic count two points, total score seven points), and a molecular subtype tending towards HER‐2 overexpression (Figure 1B). This evidence concerns the gene ERBB2 and neoplasm.