Unexpected diagnose of endometriosis in women undergoing ovarian tissue transplantation

Introduction Ovarian-cryopreservation with subsequent transplantation is a restoring fertility option in women at risk of premature ovarian-failure. The association between infertility and endometriosis is well known. Although endometriosis usually ends with the menopause due to decreasing estrogen, endometriosis can occur after menopause. This study aims to investigate women with premature menopause with endometriosis diagnosed during ovarian-tissue-transplantation, and to address the questions of how endometriosis after cytotoxic treatment and premature menopause might be explained, whether it affects pregnancy rates, and whether there is an association between endometriosis and the original cancer.