pILC was significantly associated with poor tumour characteristics, including a higher histological grade, a larger tumour size, LN metastasis, a higher probability of LVI, a poorer NPI prognostic group, ER and PR negativity, HER2 overexpression, a higher Ki67 index, and a younger patient age compared to cILC (Table 1). Here, MKI67 is linked to neoplasm.