Breast development happens in certain stages during a woman's life: first before birth, again at puberty, and later during the childbearing years. This starts with a thickening in the chest area called the mammary ridge or milk line. By the time a baby girl is born, nipples and the beginnings of the milk-duct system have formed. The first thing to develop are lobes, or small subdivisions of breast tissue. Mammary glands develop next and consist of 15 to 24 lobes. Mammary glands are influenced by hormones activated in puberty. Shrinkage involution of the milk ducts is the final major change that happens in the breast tissue.
The disease is related to an uncontrollable growth of cells in the breast, caused by inherited or acquired gene mutations and promoted by numerous risk factors. Every year in the U. Breast or nipple pain is a feeling of discomfort, tenderness, or affliction in any part of the breast or underarm region. Breast or nipple pain caused by tumors is more common if the disease has spread to other parts of the body.
If so, your doctor may have told you about options to rebuild your breast or breasts — a surgery called breast reconstruction. Typically, breast reconstruction takes place during or soon after mastectomy, and in some cases, lumpectomy. Breast reconstruction also can be done many months or even years after mastectomy or lumpectomy.