How do you approach treatment in premenopausal patients who develop a contralateral HR+ breast cancer while already on tamoxifen and ovarian function suppression?
How would you manage endocrine therapy 7 years after the original ER+/PR+/HER2- IDC, while on adjuvant tamoxifen/OFS develops a contralateral ER+/PR+/HER2- cT1c multifocal ILC?
Answer from: Medical Oncologist at Academic Institution
Several pieces of information are lacking in this clinical case to make a solid treatment recommendation: what is the current age of the patient? What is her menopausal status? Is the new contralateral breast cancer clinically node negative?
Since this new second primary contralateral breast cancer...