Breast cancer is cancer that develops in breast cells. Signs of breast cancer may include a lump in the breast, a change in breast shape, dimpling of the skin, fluid coming from the nipple or a red of skin. Typically, the cancer forms in either the lobules or the ducts of the breast. Breast cancer forms in the cells of the breasts.
Breast cancer is the most common type of cancer in the UK, USA. Most women diagnosed with breast cancer are over the age of 50, but younger women can also get breast cancer.