Polymastia typically occurs in the womb during the development. During normal development, breast tissue will develop along the milk line, and additional tissue will disintegrate and be absorbed into the body. Polymastia occurs when the additional tissue does not disintegrate before birth. This condition can be inherited.
Accessory breast
Inverted nipple
Supernumerary nipple
Breast hemicircumference
Cracked nipple
Prostate hypoplasia
Dense breast tissue
Inguinal lymphadenopathy