The structure of the correct breast consists mainly of skin, fatty tissue, fibrous tissue and mammary glands. The breast is supported by the pectoral muscles and ribs and is attached to the chest by the suspensory ligament of the breast. At the top of the breast is the nipple, which is surrounded by the areola, the nipple-areola complex, which varies in color from pink to dark brown, and is surrounded by numerous sebaceous glands. The mammary glands are exocrine glands that produce milk to feed the baby under the influence of hormones. The mammary glands are distributed throughout the breast, and the ratio of breast tissue to adipose tissue is close to 1:1 in non-lactating women, while the ratio of breast tissue to adipose tissue is close to 2:1 in lactating women. Breasts vary greatly in size and weight, and their shape, size and weight change with different periods of development, menstrual cycles and health conditions.