[Clinicopathologic characteristics of breast cancer with basal-like immunophenotype].

Objective: To study the clinicopathologic characteristics of basal-like immunophenotype breast cancer (BLBC).

Methods: 458 cases of female infiltrative breast cancer were studied using immunohistochemical staining with an antibody panel of ER, PR, HER2, Ki-67, CK5/6, CK14 and epidermal growth factor receptor (EGFR) and were classified basing on the immunophenotypes. The clinicopathologic characteristics were compared with other immunophenotypes of breast cancer.