Risk of pregnancy after a diagnosis of breast cancer

Kevin Fox, MD
Last Modified: June 9, 2002


Dear OncoLink "Ask The Experts,"
Is it really a risk to become pregnant when diagnosed with metastatic breast cancer, which has been stable for 2 years? Is the breast cancer likely to "flare up" due to the increase in estrogen?


Kevin Fox, MD Assistant Director, Clinical Affairs and Associate Professor of Hematology/Oncology at the Abramson Cancer Center of the University of Pennsylvania responds:

It is presumed that estrogen-sensitive breast cancers will be sensitive to all forms of estrogen with few exceptions. No form of estrogen is safer than another. There can be large increases in estrogen secretion with pregnancy. I personally think it is pretty risky.