What is the internal structure of the breast?

There are mainly glands, ductal system, adipose tissue and fibrous tissue in the breast, among which glands and ducts are like a small tree growing upside down (Figure 1). Each breast gland has 15~20 glandular lobes arranged radially, and each glandular lobe is divided into many glandular lobules, each glandular lobule is composed of? 10~ 100 acinus. The number and size of lobules and acinus vary with development, pregnancy, lactation and menstrual cycle. Each glandular lobe has its own corresponding duct system, which is radially arranged with the nipple and opens at the nipple respectively. Branches at all levels of the catheter continuously branch from the large, medium and small catheters to the terminal catheter, which communicates with the acinus, and the milk secreted by the acinus flows through these pipes during lactation. The adipose tissue in the breast wraps the breast like a plasticine, forming a hemispherical fat sac. Generally speaking, the amount of adipose tissue determines the size of breasts. The glandular lobes, ducts and adipose tissue of the breast are all wrapped by fibrous tissue, so that the breast is wrapped between the superficial and deep layers of the superficial fascia of pectoralis major. In addition, there are some fibrous tissues located between the superficial and deep fascia, perpendicular to the lobules of the breast, called suspensory ligament of the breast, which can fix the breast on the pectoralis major, not only keep the activity of the breast, but also prevent the breast from sagging. The nipple is composed of dense connective tissue and smooth muscle, and the smooth muscle is arranged in a ring or radial pattern. When there is mechanical stimulation, the smooth muscle contracts, which can make the nipple erect, squeeze the catheter and ductal sinus, and discharge its contents. There are sweat glands and sebaceous glands in areola. Sebaceous glands, also known as areola glands, have the function of protecting breast skin and lubricating nipples and baby lips. If the treatment of this disease is delayed, it will often become a difficult disease to treat, but it is not the end of the disease. Dear patients and friends, don't have too much psychological burden. Go to a regular hospital as soon as possible, so that doctors with many years of medical experience can give you personalized treatment, and through scientific treatment, you can get rid of the disease and recover your health.