According to Cancer Research UK,, external stage four breast cancer is a cancer that starts in the breast tissue but spreads to another part of the body, making it incurable. Treatment can control the cancer for some years, however.

The main symptoms of breast cancer in women may include a lump, or swelling in your breast, chest or armpit, the NHS website says., external

Symptoms can also include a change in the skin of your breast such as dimpling or redness, a change in size or shape of one or both breasts, and/or nipple discharge (if you are not pregnant or breastfeeding), which may have blood in it.

Other symptoms may include a change in the shape or look of the nipple, such as it turning inwards or a rash on it.

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