The main difference between fake and real parametrial breasts is the difference between the glands. A fake parametrial breast has no glandular tissue or nipples, which means that it does not have the normal breast milk secretion function, but only a hemispherical fleshy bulge under the armpit, which is soft to the touch. The main difference between a true parametrium and a false parametrium is the presence of glandular tissue and a nipple structure or a pore-like structure that can secrete milk, which is equivalent to a more complete breast structure, usually also in the armpit. The formation of the parametrial breast is greatly related to embryonic development and genetic factors, a deformity formed during the process of human embryonic development, also known as a phenomenon of reversion by experts.