Breast cancer is a disease in which cells in the breast grow out of control. There are different kinds of breast cancer. The kind of breast cancer depends on which cells in the breast turn into cancer.
Breast cancer can begin in different parts of the breast. A breast is made up of three main parts: lobules, ducts, and connective tissue. The lobules are the glands that produce milk. The ducts are tubes that carry milk to the nipple. The connective tissue (which consists of fibrous and fatty tissue) surrounds and holds everything together. Most breast cancers begin in the ducts or lobules.
Breast cancer can spread outside the breast through blood vessels and lymph vessels. When breast cancer spreads to other parts of the body, it is said to have metastasized.
The most common kinds of breast cancer are.
Breast cancer is a type of cancer that originates in the cells of the breast, often forming a lump or mass.
Common risk factors include gender (women are at higher risk), age, family history, genetic mutations (BRCA1 and BRCA2), hormonal factors, obesity, and alcohol consumption.
Symptoms may include a lump or mass in the breast, changes in breast size or shape, skin changes on the breast, and pain in the breast.
