The breasts are cones with their apex at the nipple and their base at the wall of the chest. The subcutaneous envelope of the breast's surface is the superficial fascia, which is found in the subcutis in practically every area of the body. The superficial fascia is separated from the skin envelope by 0.5–3 cm of subcutaneous fat (adipose tissue). The adult glandular part of the breast encloses lactiferous lobes that converge on the nipple, through the milk ducts (Figs. 24.1 and 24.2).