The female breast is a familiar structure on the human body. It comes in multiplicity of different sizes and shapes. The breast rests against the chest wall and immediately underneath the breast is the large pectoralis muscle. The muscle covered with a layer of connective tissues called the fascia, which separates the breast from the underlying muscle. The fascia also acts as an important barrier to the initial spread of breast cancer. The breast has about fifteen to twenty lobes or sections radiating out from your nipple like the sections of an orange. Each lobe has many smaller divisions called lobules, which end in dozens of tiny milk producing bulbs. The female breast is a gland with a cellular structure capable of producing secretions such as milk during lactation. These secretions can be directed through channels or ducts, which joins and exit through small openings in the nipple. The cells that line these ducts are called ductual carcinomas. The rest of the breast is mostly fatty tissue. The men's breasts are similar to the female breast. They too have ducts with the exception of functional changes.
             Every cell in the human body with the exception of the lens in the eye and teeth may undergo changes and assume an abnormal form of growth. When this happens doctors have to ask themselves what caused these changes and why. They would look at factors such as family history, which would place patients in a higher or lower risk group. However, as of today there has yet to be a single specific agent to be found. The spread of cancer can happen either through the lymphatic system, which includes the lymph nodes and vessels, or through direct contact from an old or original tumor.
             All abnormalities of the breast fall into three categories: benign, premalignant and malignant. Benign lesions or masses do not become cancer. Premalignant conditions can develop into cancer in the near or distant future. These conditions indicate unus...