Bulging granules in the areola are considered to be Montgomery’s nodes or Montgomery’s gland bulges. This kind of areola bulge is mainly seen in pregnant or lactating women, because during pregnancy women secrete a lot of progesterone and placenta secrete a lot of estrogen, these hormones will stimulate the proliferation of breast follicles to become larger, breast ducts expand, and make the nipples bigger and darker, so that the areola expands, and at the same time stimulate the large sebaceous glands that can secrete milk, the Montgomery gland proliferates and makes its opening on the areola prominent and elevated, thus forming a small granule on the areola. This is a normal physiological phenomenon and does not require special treatment; oral contraceptive pills may also cause the appearance of Montgomery’s nodules. Pathological conditions such as polycystic ovaries, prolactinomas and other sex hormone-secreting tumors can also occur, and a small number of healthy unmarried women can also have areola nodules.