What is the cause of axillary accessory breast?

In layman's terms, accessory breasts are extra breasts that grow in a certain part of the body in addition to the two normal breasts. In real life, accessory breasts often appear under the armpits, but they can also grow above or below the breasts. Although it will not cause much impact on health, it will be very embarrassing and people dare not wear suspenders. So what exactly is the cause of axillary breast?

innate

The human mammary gland is derived from the ectoderm. When the embryo develops to the second month, there are 6 to 8

The initial formation of mammary gland. Under normal circumstances, when the embryo develops to the 9th week, except for a pair of mammary gland rudiments located between the 5th ribs in the chest area, which can be retained and continue to develop, the rest will degenerate and disappear. If one pair (or several pairs) of the remaining mammary gland primordia do not disappear, they will develop into extra breasts or nipples after birth, which are called accessory breasts (polymammary glands or multiple nipples).

the day after tomorrow

It is very common for women to have accessory breasts, which is related to the choice of underwear. Due to past misconceptions, people tend to choose a smaller size of bra, hoping to achieve the effect of creating cleavage. Because the bra is too small, the underwire and cup have relatively insufficient coverage, and prolonged compression will squeeze the milk fat around the breasts over time. The mammary glands will develop towards the armpits where they are not covered, and accessory breasts will appear. Therefore, long-term incorrect underwear wearing habits are the biggest factor causing the formation of accessory breasts.

The formation of accessory breasts mostly occurs in female adolescence. Girls at this stage are partly ashamed and want to cover up their developing breasts, so they try to choose underwear that makes their breasts look less obvious. At the same time, they often have incorrect postures, hunched backs, etc. In addition, because women are still young at this time, a lot of knowledge comes from their mothers, and underwear is also chosen by their mothers. However, they themselves usually do not know that the type and size of underwear are not suitable for them, which leads to the formation of accessory breasts over time. The accessory breasts formed at this time will often become more and more serious with age. Asian breasts tend to expand outward, so it is important for women to provide correct education for teenagers and pay attention to protection from an early age.

Location

Most accessory breasts are located on the lower inner side of the normal breast, or above the normal breast near the armpit. A few are found in the abdomen, groin, and inner thighs. They occasionally occur on the cheeks, ears, neck, upper limbs, shoulders, buttocks, back, and vulva, and can easily be mistaken for subcutaneous nodules, lymph nodes, or tumors. Accessory breasts usually appear in pairs and are symmetrically distributed. Most patients have only one pair, but there are also those who have one or more than one pair.

They are generally smaller than normal breasts. There are three common situations: the first is that there is only a nipple but no mammary tissue, which is often mistaken for a wart or growth; the second is that there is no nipple, but there is mammary tissue deep in the subcutaneous tissue; these two types are medically called incomplete accessory breasts. The third type is one with both nipple and breast tissue, called complete accessory breast, which is commonly found in the armpit and is larger in size.