Mastocytosis is an early lesion of poor breast structure. It is the most common clinical breast disease that afflicts many women. Clinical manifestations: breast pain is characteristic, and is most common in unmarried, married, infertile, childbearing and non-lactating women, and most common in middle-aged women who are sexually active during their reproductive years. The periodic pain in the breast ranges from vague to severe, and is evident before menstruation and decreases or disappears after menstruation. Some nipples overflow with fluid or blood. Periodic breast lumps of about 2 cm, more firm and poorly defined, without adhesions to the skin. Or breast swelling, local thickening, granular hard nodules, scattered distribution, single or multiple nodules. This is why so many people feel they have a lump in their breast, but the ultrasound only reports: mastopexy.