The accessory breast comes from the uterus. In human embryos, when the embryo is only a little, the ectodermal cells on the ventral side of his trunk begin to thicken and form a ridge, which is equivalent to the connection from the inside of the body to the groin. Those two ridges are called mammary gland lines, and there are many mammary glands on the lines.
Because most people generally have only one or two babies, they don't need many breast tissue cells, so there is only one pair of breast tissue cells on the chest to make them continue to develop and form nipple buds (that is, nipples). When the embryo is three to four months old, breast tissue is formed. The remaining breast tissue cells began to fade gradually in the last week of embryo. If the regression is not complete, redundant breast tissue will be formed after birth, which is medically called accessory breast or mastopathy.
How long is the auxiliary breast around the armpit, diagonally above the normal breast. Most of the accessory breasts are like babies' breasts, and some even have complete breast bodies (nipples, areola, glands). Accessory breasts are generally invisible during adolescence. It develops with the growth and development of the human body and will appear after delivery.
Accessory mastectomy is not complicated, and it can usually be done under anesthesia. The incision of assisted mastectomy can be designed in the front of armpit, so no scar can be seen after operation. Remove breast tissue cells from the accessory breast. If there are nipples and areola at the same time, they should also be removed together. After the operation, the bandage should be pressed, and the stitches should be removed in about 10 days.