Among the structural abnormalities in gynecology, uterine fibroids and adenomyosis are two different, although often coexisting pathologies with a noticeable prevalence in women of reproductive age. So far, various mechanisms have been proposed to explain the effect of each of these diseases on a woman's reproductive function. Modern data indicate that the presence of submucosal and intramural nodes of fibroids in the uterus has an adverse effect on conception and early pregnancy. In addition, the presence of fibroids is associated with adverse pregnancy outcomes. As for adenomyosis, apart from the supposed coexistence of adenomyosis and infertility, until now the causal relationship between these conditions has not been fully confirmed. However, preterm labor and premature rupture of membranes, rupture of the uterus, postpartum hemorrhage due to uterine atony and ectopic pregnancy have all been associated with adenomyosis .