RT Book, Section A1 Boughey, Judy C. A1 Erdahl, Lillian M. A2 Morita, Shane Y. A2 Balch, Charles M. A2 Klimberg, V. Suzanne A2 Pawlik, Timothy M. A2 Posner, Mitchell C. A2 Tanabe, Kenneth K. SR Print(0) ID 1145760394 T1 Unusual Breast Histologies T2 Textbook of Complex General Surgical Oncology YR 2018 FD 2018 PB McGraw-Hill Education PP New York, NY SN 9780071793315 LK hemonc.mhmedical.com/content.aspx?aid=1145760394 RD 2024/10/07 AB As our understanding of the biology of breast cancer evolves, we recognize that there are many different types of histologically distinct cancers. Breast cancer is ahead of many other solid organ malignancies in our understanding about different tumor biologies. We routinely differentiate breast cancers based on histology between invasive ductal carcinoma and invasive lobular carcinoma. We also divide breast cancers into approximated subtypes based on their hormone receptor status (estrogen and progesterone) as well as HER-2/neu status.