Subendometrial and intraendometrial blood flow during the menstrual cycle in patients with endometriosis

The higher endometrial perfusion in patients with ovarian endometrioma that is observed in the late secretory phase of the cycle, close to menstrual shedding, favors the hypothesis that women with endometriosis might have higher endometrial vascular activity, thus facilitating the implantation process of endometrial cells outside the uterus.