RT Book, Section A1 Layman, Rachel M. A2 Kantarjian, Hagop M. A2 Wolff, Robert A. A2 Rieber, Alyssa G. SR Print(0) ID 1190836697 T1 Special Situations in Breast Cancer T2 The MD Anderson Manual of Medical Oncology, 4e YR 2022 FD 2022 PB McGraw Hill Education PP New York, NY SN 9781260467642 LK hemonc.mhmedical.com/content.aspx?aid=1190836697 RD 2024/04/23 AB KEY CONCEPTSManagement of pregnancy-associated breast cancer requires careful multidisciplinary care and coordination for optimal outcomes.Pregnancy after a breast cancer diagnosis is not associated with worsened outcomes, based on retrospective data.Male breast cancer management is largely extrapolated from data on female breast cancer; however, tamoxifen is the preferred endocrine therapy agent.Combined hormone replacement therapy with estrogen and progesterone in postmenopausal women increases the risk of developing breast cancer, but risk is not clearly increased with estrogen-only therapy.Adjuvant endocrine therapy with tamoxifen or an aromatase inhibitor can be considered for estrogen receptor–positive ductal carcinoma in situ.Patients with pathogenic mutations in breast cancer susceptibility genes should be counseled regarding the risks and benefits of screening and prevention options.