In summer, more and more women wear halter tops and bustier dresses, and some women find that the fat at the front of the armpit is always squeezed out, which affects the beauty. Many people think that the fatty tissue is squeezed because of obesity, but some of them are actually parametrium. Parammary glands are congenital and increase in size during pregnancy or breastfeeding, and some become visible after birth. It is generally believed that asymptomatic and soft parametrial breasts can be reviewed regularly and do not require immediate surgical treatment. Surgery can be considered for the removal of the parametrium in the following cases: 1) severe parametrial hyperplasia such as pain, 2) parametrial tumors, parametrial overflow and other symptoms, 3) larger anterior axillary parametrium that affects the aesthetics and dressing, can be treated surgically. Some women unintentionally find their armpits bulging with a lump, soft as sheep. When the breast is swollen and painful before or during menstruation, the lump in the armpit is also swollen and painful, and is even mistaken for a “tumor” growing in the breast that has been transferred to the armpit. In fact, this may be a parametrial breast. Parametrial breasts are usually congenital and begin to develop after adulthood, during pregnancy or breastfeeding, or in a few cases, after the age of forty as the body “gets fat”. Some of them have nipples, areolas, and glands, and can secrete milk during lactation; some only have glands, but no nipples, and local lumps are formed. They are often located in the lower part of the armpit, like a mass of fat. In some cases, there are only small, dysplastic nipples without glands. In rare cases, parametrium may also be present on the abdomen and vulva. However, they are most often found in the armpits or in the upper or lower part of the normal breast, mostly bilaterally, but also unilaterally. According to statistics, women with parametrial breasts account for about two to four percent of adult women, and the chance of parametrial cancer in parametrial gland is close to that of normal breast, which is not as high as people think. Professional parametrial surgery can restore normalcy in a short period of time and achieve the ideal result of parametrial surgery.