Is chemotherapy required for stage 1A IDC breast cancer, tumor size 1.1 cm, ER & PR positive, HER2 negative, nuclear grade 1. Patient is 42 years old.

Borderline call! Your breast tumor is quite small, so it has >90% odds that it can be safely treated with surgery, without any chemotherapy required. You may ask your doctor for treating you with tamoxifen which is a antihormone type of medication, commonly used as the treatment for tumors that are ER positive. Good luck.