In this project, we will characterize the effects of fertility limiting diseases of pelvic organs on the receptivity of the endometrium. The primary aim of the project is the characterization of endometrium in patients with infertility suffering from AD, UF and DE, and compare it with infertile patients with minimal or mild endometriosis but no AD or UF (ETRS group), and with healthy women with only male factor of infertility (CTRL group, controls). The proper infertility treatment of patients with AD,UF and endometriosis is controversial and lacking clear evidence based algorithms. Despite their topical character, especially AD and DE (and UFs as well if present as multiple lesions) can be classified as systemic diseases in relation to women´s fertility. The presumed impact of these pathologies to endometrial receptivity (no matter they do not occur in the uterine cavity itself) can beseen as a fascinating hypothesis. Eradication of these diseases could have a potential to increase the prognosis of these women fundamentally.