The breast is made up of a set of glands and adipose tissue, and is situated between the skin and the chest wall. It is, in fact, not a single gland, but a set of glandular structures, called lobules, joined together to form a lobe. In a breast, there are 15 to 20 lobes. The milk reaches the nipple from the lobules through small tubes called milk ducts.
Breast cancer is a potentially serious disease if it is not detected and treated for a long time. It is caused by the uncontrolled multiplication of some of the cells in the mammary gland that have transformed into malignant cells. This means that they have the ability to detach themselves from the tissue that has generated them to invade the surrounding tissues, and eventually the other organs of the body. In theory, cancers can be formed from all types of breast tissue, but the...