Introduction
Endometriosis (EM), as a benign gynecological disease in which endometrial glands and stroma appear outside the uterus, is most commonly found in the ovaries and uterosacral ligaments in clinical practice.1–3 From the etiology of infertility, about one-third of infertile women are caused by EM.4,5 Therefore, it is particularly important to eliminate the hidden dangers of infertility caused by EM and help achieve the expectation of natural conception during pregnancy. Up to now, the tools for clinical assessment of EM-related infertility risk still rely on the clinical staging of EM proposed by the American Society for Reproductive Medicine (ASRM) in 1979.6,7 Although the ASRM staging was revised twice during the period, there was no significant correlation…