P289 Retrospective study of pregnancy outcome after breast cancer. (April 2023) - Yoshimura, A.; Nakakami, A.; Komaki, R.; Isogai, A.; Endo, Y.; Ozaki, Y.; Nozawa, K.; Kataoka, A.; Kotani, H.; Hattori, M.; Sawaki, M.; Iwata, H.