Although PRL-induced adenomyosis has been reported in several mouse strains, such as SHN, SLN, Balb/C, C57, C3H, Balb/C and C3H F1 hybrids, C57, and ICR, and also in rats [82,83,84,85], so far there have been no epidemiological data in support for such a link in humans. Here, PRL is linked to adenomyosis.