Er Pr Positive Breast Cancer. In these cancers the. Tumors that are er pr positive are much more likely to.
In other words the cancer cells express estrogen receptors but not progesterone receptors. Er positive breast cancer has a high chance of being successfully treated especially when it s discovered early. Breast tumors are tested to see if they are estrogen receptor er and or progesterone receptor pr positive or negative.
In other words the cancer cells express estrogen receptors but not progesterone receptors.
Two types of hormone receptor positive breast cancer are estrogen receptor positive er positive breast cancer and progesterone receptor positive pr positive breast cancer. These breast cancers can be treated with hormone therapy drugs that lower estrogen levels or block estrogen receptors. Hormone receptor tests are both prognostic and predictive. Approximately 10 of u s.
