A breast tumor is an abnormal mass of tissue in the
breast as a result of
neoplasia. A breast neoplasm may be
benign, as in
fibroadenoma, or it may be
malignant, in which case it is termed
breast cancer. Either case commonly presents as a
breast lump. Approximately 7% of breast lumps are fibroadenomas and 10% are breast cancer, the rest being other benign conditions or no disease.
Phyllodes tumor is a fibroepithelial tumor which can be benign, borderline or malignant.
Breast cancer Breast cancer is cancer of the breast tissues, most commonly arising from the milk ducts. Worldwide, breast cancer is the leading type of cancer in women, accounting for 25% of all cases. It is most common in women over age 50. 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, a newly inverted nipple, or a red or scaly patch of skin. Diagnosis may also be made when the cancer is asymptomatic, through
breast cancer screening programs, such as
mammograms. Outcomes for breast cancer vary depending on the cancer type,
extent of disease, and person's age. Survival rates in the
developed world are high, with between 80% and 90% of those in England and the United States
alive for at least 5 years. ==Fibrocystic breast changes==