![]() There are more than 18 other sub-types of breast cancer. Cancers developing from the ducts are known as ductal carcinomas, while those developing from lobules are known as lobular carcinomas. Breast cancer most commonly develops in cells from the lining of milk ducts and the lobules that supply these ducts with milk. About 5–10% of cases are the result of an inherited genetic predisposition, including BRCA mutations among others. Risk factors for developing breast cancer include obesity, a lack of physical exercise, alcohol consumption, hormone replacement therapy during menopause, ionizing radiation, an early age at first menstruation, having children late in life or not at all, older age, having a prior history of breast cancer, and a family history of breast cancer. ![]() ![]() In those with distant spread of the disease, there may be bone pain, swollen lymph nodes, shortness of breath, or yellow skin. Signs of breast cancer may include a lump in the breast, a change in breast shape, dimpling of the skin, milk rejection, fluid coming from the nipple, a newly inverted nipple, or a red or scaly patch of skin. Surgery, radiation therapy, chemotherapy, hormonal therapy, targeted therapy įive-year survival rate ≈85% (US, UK) īreast cancer is cancer that develops from breast tissue. A lump in a breast, a change in breast shape, dimpling of the skin, fluid from the nipple, a newly inverted nipple, a red scaly patch of skin on the breast īeing female, obesity, lack of exercise, alcohol, hormone replacement therapy during menopause, ionizing radiation, early age at first menstruation, having children late in life or not at all, older age, prior breast cancer, family history of breast cancer, Klinefelter syndrome
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