What is the hardest breast cancer to treat? What is triple-negative breast cancer? Triple-negative breast cancer is that which tests negative for three receptors: estrogen, progesterone, and human epidermal growth factor receptor 2 (HER2). It is also the least common form of breast cancer and the hardest to treat.
Which type of breast cancer has the best prognosis? Grade 1 has the best prognosis. Some breast cancers need your body’s natural hormones estrogen (ER) and progesterone (PR) to grow. These cancer cells have proteins on the outside of their walls called hormone receptors.
What is the easiest type of breast cancer to treat? Ductal carcinoma in situ or DCIS
The cancer cells have not spread through the walls of the ducts into the nearby breast tissue. Nearly all women with DCIS can be cured.
What is the most common place breast cancer spreads to? The most common parts of the body where breast cancer tends to spread (metastasize) are the bones, lungs, brain, and liver.