the number and size of tumors

tumor grade, which indicates how quickly the cancer can be expected to grow and spread

the specific type of breast cancer

how far along you are in your pregnancy

your general health

personal preferences

Surgery

Chemotherapy

Radiation

Hormone and targeted therapies

aromatase inhibitors

bevacizumab (Avastin)

everolimus (Afinitor)

lapatinib (Tykerb)

palbociclib (Ibrance)

tamoxifen

trastuzumab (Herceptin)

When coming up with a treatment plan, much will depend on extent of the cancer. Your doctors will consider:The first-line treatment for breast cancer is surgery, even if you’re pregnant. This may mean breast-conserving surgery ( lumpectomy ) or mastectomy with lymph node removal. Breast surgery for early stage breast cancer is considered safe during pregnancy, although general anesthesia may presentto the baby. Chemotherapy generally isn’t given during the first trimester of pregnancy, when the baby’s internal organs are developing. Studies show that it’s safer to use some chemo drugs during the second and third trimesters, but it’s not usually given in the final three weeks of pregnancy. Use of chemotherapy may depend on the specific type of breast cancer you have and how aggressive it is. In some cases, waiting until after you deliver is an option.High doses of radiation given at any time during pregnancy canthe risks of harm to the baby. These risks include:For this reason, radiation therapy is usually delayed until after the baby is born.Hormone therapies and targeted therapies aren’t considered safe to use during pregnancy. This includes: