Breast cancer with an extremely high Ki‐67 labeling index despite a low nuclear grade. Issue 2 (23rd December 2016) - Nakayama, Kanako; Yagata, Hiroshi; Hayashi, Naoki; Yoshida, Atsushi; Takei, Junko; Moriya, Takuya; Suzuki, Koyu; Yamauchi, Hideko