“…Evaluating the relationship between pain and endometriosis, however, is challenging given that pain is difficult to measure and the mechanism by which endometriosis causes pain is not well understood (American Society for Reproductive Medicine, 2014). While previous studies have provided important data on the incidence of pelvic pain and endometriosis (Cox et al, 2007;Kang et al, 2007;Ballard et al, 2010;Hsu et al, 2011;Renner et al, 2012), little research has been done to assess both the typology and topology of pelvic pain, and pain beyond the pelvis, and endometriosis diagnosis and severity using operative findings and a standardized classification system (American Society for Reproductive Medicine, 1997).…”